Open Bug 2043908 Opened 5 months ago Updated 4 months ago

DevTools reproducibly renders without any interface elements, except its sections’ backgrounds, and their borders, at some, but not all, URIs.

Categories

(DevTools :: Shared Components, defect, P3)

Product:
DevTools
Component:
Shared Components
Version:
Firefox 153
Platform:
x86_64
Linux
Type:
defect

Tracking

(firefox153 affected)

Tracking Flags:
Tracking Status
firefox153 --- affected

People

(Reporter: B.RJL, Unassigned)

References

(Depends on 1 open bug)

Details

Attachments

(2 files)

A Screenshot Of The Affected Window
19.15 KB, image/png
Details
A Screenshot Of Another, Affected Window
56.55 KB, image/png
Details

What I Did

At firefox-nightly "https://github.com/RokeJulianLockhart/RokeJulianLockhart/edit/main/'Metadata'%23.dir/'Description'%23.txt.Markdown", I invoked javascript:window.open(location.href, "detab", "toolbar=0") (from //*[@id="PlacesToolbarItems"]/toolbarbutton[1], to update the screenshot at github.com/github/markup/issues/2038). When it appeared, I invoked the development tools.

What Occurred

The DevTools rendered without an interface, until I visited another website.

My Environment

Name: firefox-nightly
Version: 153.0a1
Release: 20260528214208
Architecture: x86_64
Install Date: Fri 29 May 2026 19:06:54 BST
Size: 388532818
Signature: (none)
Source RPM: firefox-nightly-153.0a1-20260528214208.src.rpm
Build Date: Fri 29 May 2026 00:51:50 BST
Build Host: 7d1f3b104889
Packager: (none)
Vendor: Mozilla

Maybe the initial toolbox startup was hanging due to an unresponsive process?

We should file an enhancement to show a message or UI when the toolbox startup is timing out. We have something showing up in the Browser Toolbox, but maybe it only works for the BT and not the regular web toolbox.

Severity: -- → S3
Flags: needinfo?(jdescottes)
Priority: -- → P3
Depends on: 2044607

Maybe the initial toolbox startup was hanging due to an unresponsive process?

If so, it didn't affect the tab's content otherwise, and it must have been reset when I switched websites, considering that the timing that it resolved itself coincided exactly with when I exited GitHub. Changing URIs within the same "website" (so-to-speak; GitHub) didn't resolve it.

(In reply to Mr. Beedell, Roke Julian Lockhart (RJLB) [:RokeJulianLockhart] from comment #3)

Maybe the initial toolbox startup was hanging due to an unresponsive process?

If so, it didn't affect the tab's content otherwise, and it must have been reset when I switched websites, considering that the timing that it resolved itself coincided exactly with when I exited GitHub. Changing URIs within the same "website" (so-to-speak; GitHub) didn't resolve it.

Yes it's going to be hard to guess for now. We should try to surface "what" we are waiting for in Bug 2044607, otherwise such issues will be difficult to debug.

Flags: needinfo?(jdescottes)

This has reproduced, at exactly https://www.reddit.com/r/softwaregore/comments/1q24dd4/i_think_wikipedias_username_validation_is_drunk/, in:

PS /> rpm -qf (Get-Command firefox-nightly).Source --queryformat @'
>> Name: %{NAME}
>> Version: %{VERSION}
>> Release: %{RELEASE}
>> Architecture: %{ARCH}
>> Install Date: %{INSTALLTIME:date}
>> Size: %{SIZE}
>> Signature: %{SIGPGP:pgpsig}
>> Source RPM: %{SOURCERPM}
>> Build Date: %{BUILDTIME:date}
>> Build Host: %{BUILDHOST}
>> Packager: %{PACKAGER}
>> Vendor: %{VENDOR}
>> '@ | yq -P
Name: firefox-nightly
Version: 154.0a1
Release: 20260619154817
Architecture: x86_64
Install Date: Sat 20 Jun 2026 01:11:22 BST
Size: 390535715
Signature: (none)
Source RPM: firefox-nightly-154.0a1-20260619154817.src.rpm
Build Date: Fri 19 Jun 2026 23:10:02 BST
Build Host: 54b256255af5
Packager: (none)
Vendor: Mozilla

Solely after ⪆ PT20M, it rendered the expected elements. I know because I watched it the entire time.

Although the -jsdebugger has refuned to invoke since that DevTools pane was initialised, the -jsdebugger does, and the tab's console returned:

  1. 18:02:09.532
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
18:02:22.379 BackupService: The enabled pref is only to be used for selectable profiles BackupService.sys.mjs:5623:23
18:04:09.364 TypeError: WindowGlobalParent.drawSnapshot: Argument 2 is not a finite floating-point value.
    drawSnapshot chrome://global/content/elements/browser-custom-element.mjs:1863
    captureTabPreviewThumbnail resource://gre/modules/PageThumbs.sys.mjs:539
    #maybeRequestThumbnail chrome://browser/content/tabbrowser/tab-hover-preview.mjs:518
    activate chrome://browser/content/tabbrowser/tab-hover-preview.mjs:391
    activate chrome://browser/content/tabbrowser/tab-hover-preview.mjs:112
    on_TabHoverStart chrome://browser/content/tabbrowser/tabs.js:327
    handleEvent chrome://browser/content/tabbrowser/tabs.js:265
    _mouseenter chrome://browser/content/tabbrowser/tab.js:735
    on_mouseover chrome://browser/content/tabbrowser/tab.js:475
    handleEvent chrome://global/content/customElements.js:459
    MozTabbrowserTab chrome://browser/content/tabbrowser/tab.js:48
    _createTab chrome://browser/content/tabbrowser/tabbrowser.js:4156
    addTab chrome://browser/content/tabbrowser/tabbrowser.js:3389
    openLinkIn resource:///modules/URILoadingHelper.sys.mjs:602
    openLinkIn chrome://browser/content/utilityOverlay.js:124
    openLinkInTab chrome://browser/content/nsContextMenu.sys.mjs:1515
    <anonymous> chrome://browser/content/browser-context.js:44
tab-hover-preview.mjs:531:17
18:04:32.745
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
```

    18:07:57.538
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
18:08:36.127 TypeError: WindowGlobalParent.drawSnapshot: Argument 2 is not a finite floating-point value.
    drawSnapshot chrome://global/content/elements/browser-custom-element.mjs:1863
    captureTabPreviewThumbnail resource://gre/modules/PageThumbs.sys.mjs:539
    #maybeRequestThumbnail chrome://browser/content/tabbrowser/tab-hover-preview.mjs:518
    activate chrome://browser/content/tabbrowser/tab-hover-preview.mjs:391
    activate chrome://browser/content/tabbrowser/tab-hover-preview.mjs:112
    on_TabHoverStart chrome://browser/content/tabbrowser/tabs.js:327
    handleEvent chrome://browser/content/tabbrowser/tabs.js:265
    _mouseenter chrome://browser/content/tabbrowser/tab.js:735
    on_mouseover chrome://browser/content/tabbrowser/tab.js:475
    handleEvent chrome://global/content/customElements.js:459
    MozTabbrowserTab chrome://browser/content/tabbrowser/tab.js:48
    _createTab chrome://browser/content/tabbrowser/tabbrowser.js:4156
    addTab chrome://browser/content/tabbrowser/tabbrowser.js:3389
    openLinkIn resource:///modules/URILoadingHelper.sys.mjs:602
    openLinkIn chrome://browser/content/utilityOverlay.js:124
    openLinkInTab chrome://browser/content/nsContextMenu.sys.mjs:1515
    <anonymous> chrome://browser/content/browser-context.js:44
tab-hover-preview.mjs:531:17
18:12:44.800
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
18:13:30.218
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
18:13:30.510
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
18:14:25.188
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
18:14:27.971
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
18:15:00.029 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/skin/classic/global/toolbarbutton.css network-events-content.js:84:15
18:15:00.029 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/skin/classic/global/arrowscrollbox.css network-events-content.js:84:15
18:15:00.057 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/skin/classic/global/menulist.css network-events-content.js:84:15
18:15:00.058 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/skin/classic/global/global.css network-events-content.js:84:15
18:15:00.058 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/content/global/elements/menupopup.css network-events-content.js:84:15
18:16:23.387
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
18:16:23.458
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
18:16:24.264
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
18:16:49.154
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
18:23:31.123
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
18:23:31.178
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
18:25:43.453 TypeError: WindowGlobalParent.drawSnapshot: Argument 2 is not a finite floating-point value.
    drawSnapshot chrome://global/content/elements/browser-custom-element.mjs:1863
    captureTabPreviewThumbnail resource://gre/modules/PageThumbs.sys.mjs:539
    #maybeRequestThumbnail chrome://browser/content/tabbrowser/tab-hover-preview.mjs:518
    activate chrome://browser/content/tabbrowser/tab-hover-preview.mjs:391
    activate chrome://browser/content/tabbrowser/tab-hover-preview.mjs:112
    on_TabHoverStart chrome://browser/content/tabbrowser/tabs.js:327
    handleEvent chrome://browser/content/tabbrowser/tabs.js:265
    _mouseenter chrome://browser/content/tabbrowser/tab.js:735
    on_mouseover chrome://browser/content/tabbrowser/tab.js:475
    handleEvent chrome://global/content/customElements.js:459
    MozTabbrowserTab chrome://browser/content/tabbrowser/tab.js:48
    _createTab chrome://browser/content/tabbrowser/tabbrowser.js:4156
    addTab chrome://browser/content/tabbrowser/tabbrowser.js:3389
    openLinkIn resource:///modules/URILoadingHelper.sys.mjs:602
    openLinkIn chrome://browser/content/utilityOverlay.js:124
    openLinkInTab chrome://browser/content/nsContextMenu.sys.mjs:1515
    <anonymous> chrome://browser/content/browser-context.js:44
tab-hover-preview.mjs:531:17
18:29:43.813
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13

    18:51:12.033
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
18:51:12.034
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
18:53:26.546 TypeError: WindowGlobalParent.drawSnapshot: Argument 2 is not a finite floating-point value.
    drawSnapshot chrome://global/content/elements/browser-custom-element.mjs:1863
    captureTabPreviewThumbnail resource://gre/modules/PageThumbs.sys.mjs:539
    #maybeRequestThumbnail chrome://browser/content/tabbrowser/tab-hover-preview.mjs:518
    activate chrome://browser/content/tabbrowser/tab-hover-preview.mjs:391
    activate chrome://browser/content/tabbrowser/tab-hover-preview.mjs:112
    on_TabHoverStart chrome://browser/content/tabbrowser/tabs.js:327
    handleEvent chrome://browser/content/tabbrowser/tabs.js:265
    _mouseenter chrome://browser/content/tabbrowser/tab.js:735
    on_mouseover chrome://browser/content/tabbrowser/tab.js:475
    handleEvent chrome://global/content/customElements.js:459
    MozTabbrowserTab chrome://browser/content/tabbrowser/tab.js:48
    _createTab chrome://browser/content/tabbrowser/tabbrowser.js:4156
    addTab chrome://browser/content/tabbrowser/tabbrowser.js:3389
    openLinkIn resource:///modules/URILoadingHelper.sys.mjs:602
    openLinkIn chrome://browser/content/utilityOverlay.js:124
    openLinkInTab chrome://browser/content/nsContextMenu.sys.mjs:1515
    <anonymous> chrome://browser/content/browser-context.js:44
tab-hover-preview.mjs:531:17
18:55:09.786
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
18:56:40.407 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/skin/classic/global/toolbarbutton.css network-events-content.js:84:15
18:56:40.407 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/skin/classic/global/arrowscrollbox.css network-events-content.js:84:15
18:56:40.429 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/skin/classic/global/menulist.css network-events-content.js:84:15
18:56:40.429 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/skin/classic/global/global.css network-events-content.js:84:15
18:56:40.429 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/content/global/elements/menupopup.css network-events-content.js:84:15
18:57:11.888
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
18:57:14.462
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
18:57:25.221
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
18:57:25.223
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
18:57:25.529
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
18:57:25.530
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:01:14.737
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:01:49.353
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:01:50.433
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:02:42.102 TypeError: WindowGlobalParent.drawSnapshot: Argument 2 is not a finite floating-point value.
    drawSnapshot chrome://global/content/elements/browser-custom-element.mjs:1863
    captureTabPreviewThumbnail resource://gre/modules/PageThumbs.sys.mjs:539
    #maybeRequestThumbnail chrome://browser/content/tabbrowser/tab-hover-preview.mjs:518
    activate chrome://browser/content/tabbrowser/tab-hover-preview.mjs:391
    activate chrome://browser/content/tabbrowser/tab-hover-preview.mjs:112
    on_TabHoverStart chrome://browser/content/tabbrowser/tabs.js:327
    handleEvent chrome://browser/content/tabbrowser/tabs.js:265
    _mouseenter chrome://browser/content/tabbrowser/tab.js:735
    on_mouseover chrome://browser/content/tabbrowser/tab.js:475
    handleEvent chrome://global/content/customElements.js:459
    MozTabbrowserTab chrome://browser/content/tabbrowser/tab.js:48
    _createTab chrome://browser/content/tabbrowser/tabbrowser.js:4156
    addTab chrome://browser/content/tabbrowser/tabbrowser.js:3389
    openLinkIn resource:///modules/URILoadingHelper.sys.mjs:602
    openLinkIn chrome://browser/content/utilityOverlay.js:124
    openLinkInTab chrome://browser/content/nsContextMenu.sys.mjs:1515
    <anonymous> chrome://browser/content/browser-context.js:44
tab-hover-preview.mjs:531:17
19:10:02.624
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:11:12.161
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:11:12.161
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:13:38.493
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:16:49.390
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:20:40.813
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:20:40.813
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:20:40.816
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:20:40.816
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:20:40.855
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:20:40.856
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:20:40.858
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:20:40.858
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:20:45.954
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:22:59.212
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:24:27.551 TypeError: WindowGlobalParent.drawSnapshot: Argument 2 is not a finite floating-point value.
    drawSnapshot chrome://global/content/elements/browser-custom-element.mjs:1863
    captureTabPreviewThumbnail resource://gre/modules/PageThumbs.sys.mjs:539
    #maybeRequestThumbnail chrome://browser/content/tabbrowser/tab-hover-preview.mjs:518
    activate chrome://browser/content/tabbrowser/tab-hover-preview.mjs:391
    activate chrome://browser/content/tabbrowser/tab-hover-preview.mjs:112
    on_TabHoverStart chrome://browser/content/tabbrowser/tabs.js:327
    handleEvent chrome://browser/content/tabbrowser/tabs.js:265
    _mouseenter chrome://browser/content/tabbrowser/tab.js:735
    on_mouseover chrome://browser/content/tabbrowser/tab.js:475
    handleEvent chrome://global/content/customElements.js:459
    MozTabbrowserTab chrome://browser/content/tabbrowser/tab.js:48
    _createTab chrome://browser/content/tabbrowser/tabbrowser.js:4156
    addTab chrome://browser/content/tabbrowser/tabbrowser.js:3389
    openLinkIn resource:///modules/URILoadingHelper.sys.mjs:602
    openLinkIn chrome://browser/content/utilityOverlay.js:124
    openLinkInTab chrome://browser/content/nsContextMenu.sys.mjs:1515
    <anonymous> chrome://browser/content/browser-context.js:44
tab-hover-preview.mjs:531:17
19:25:06.285
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:27:08.792
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:28:05.693
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:31:49.488
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:31:50.946
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:33:41.462
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:33:41.487
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:36:33.836
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:38:28.850
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:38:36.929
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:42:30.331
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:42:30.385
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:42:34.002 <empty string> 2
19:42:36.016
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:42:36.016
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:43:00.458 <empty string> 2
19:43:04.524
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:43:43.913 getScreenshot(https://a-v2.sndcdn.com/assets/images/meta/soundcloud-unfurl-square.png) failed: Error: page-thumbnail:error
    observe resource://gre/modules/BackgroundPageThumbs.sys.mjs:154
    _onCaptureOrTimeout resource://gre/modules/BackgroundPageThumbs.sys.mjs:509
    done resource://gre/modules/BackgroundPageThumbs.sys.mjs:753
    _done resource://gre/modules/BackgroundPageThumbs.sys.mjs:776
    onStateChange resource://gre/modules/BackgroundPageThumbs.sys.mjs:344
Screenshots.sys.mjs:68:15
19:46:49.583
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:48:34.613
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:48:34.624
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:48:42.213
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:48:42.213
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:49:29.782
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:49:29.791
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:49:30.215 <empty string> 2
19:50:21.686 Unable to find target with innerWindowId:747324309616 watcher.js:208:13
19:50:21.687 Unable to find target with innerWindowId:747324309616 3 watcher.js:208:13
19:50:22.315 <empty string> 2
19:50:22.369 Listener for event 'frame' did not return a promise. 5 event-emitter.js:230:23
19:50:22.482 Error while destroying front: inspector Error: Connection closed, pending request to server0.conn0.watcher2.process348//inspectorActor442, type getWalker failed

Request stack:
request@resource://devtools/shared/protocol/Front.js:321:14
generateRequestMethods/</frontProto[name]@resource://devtools/shared/protocol/Front/FrontClassWithSpec.js:94:19
_getWalker@resource://devtools/client/fronts/inspector.js:87:30
initialize@resource://devtools/client/fronts/inspector.js:72:28
async*manage@resource://devtools/shared/protocol/Front.js:145:19
getFront@resource://devtools/shared/protocol/types.js:568:18
getFront@resource://devtools/client/fronts/targets/target-mixin.js:250:15
_onTargetAvailable@resource://devtools/client/inspector/shared/walker-event-listener.js:65:42
_emit@resource://devtools/shared/event-emitter.js:216:36
emitAsync@resource://devtools/shared/event-emitter.js:157:17
_onTargetAvailable@resource://devtools/shared/commands/target/target-command.js:272:33
async*_emit@resource://devtools/shared/event-emitter.js:216:36
emit@resource://devtools/shared/event-emitter.js:153:10
_onTargetAvailable@resource://devtools/client/fronts/watcher.js:75:10
_emit@resource://devtools/shared/event-emitter.js:216:36
emit@resource://devtools/shared/event-emitter.js:153:10
onPacket@resource://devtools/shared/protocol/Front.js:371:13
onPacket@resource://devtools/client/devtools-client.js:541:13
send/<@resource://devtools/shared/transport/local-transport.js:52:25
exports.makeInfallible/<@resource://devtools/shared/ThreadSafeDevToolsUtils.js:103:22
exports.makeInfallible/<@resource://devtools/shared/ThreadSafeDevToolsUtils.js:103:22
    baseFrontClassDestroy resource://devtools/shared/protocol/Front.js:105
    destroy resource://devtools/shared/protocol/Front.js:73
    destroy resource://devtools/client/fronts/inspector.js:139
    destroy resource://devtools/shared/protocol/Pool.js:214
    baseFrontClassDestroy resource://devtools/shared/protocol/Front.js:109
    _onTargetDestroyed resource://devtools/shared/commands/target/target-command.js:424
    _emit resource://devtools/shared/event-emitter.js:216
    emit resource://devtools/shared/event-emitter.js:153
    _onTargetDestroyed resource://devtools/client/fronts/watcher.js:89
    _emit resource://devtools/shared/event-emitter.js:216
    emit resource://devtools/shared/event-emitter.js:153
    onPacket resource://devtools/shared/protocol/Front.js:371
    onPacket resource://devtools/client/devtools-client.js:541
    send resource://devtools/shared/transport/local-transport.js:52
    makeInfallible resource://devtools/shared/ThreadSafeDevToolsUtils.js:103
    makeInfallible resource://devtools/shared/ThreadSafeDevToolsUtils.js:103
target-mixin.js:463:19
19:50:22.483 Failed to start [root-node] legacy listener for target null Error: Connection closed, pending request to server0.conn0.watcher2.process348//inspectorActor442, type getWalker failed

Request stack:
request@resource://devtools/shared/protocol/Front.js:321:14
generateRequestMethods/</frontProto[name]@resource://devtools/shared/protocol/Front/FrontClassWithSpec.js:94:19
_getWalker@resource://devtools/client/fronts/inspector.js:87:30
initialize@resource://devtools/client/fronts/inspector.js:72:28
async*manage@resource://devtools/shared/protocol/Front.js:145:19
getFront@resource://devtools/shared/protocol/types.js:568:18
getFront@resource://devtools/client/fronts/targets/target-mixin.js:250:15
_onTargetAvailable@resource://devtools/client/inspector/shared/walker-event-listener.js:65:42
_emit@resource://devtools/shared/event-emitter.js:216:36
emitAsync@resource://devtools/shared/event-emitter.js:157:17
_onTargetAvailable@resource://devtools/shared/commands/target/target-command.js:272:33
async*_emit@resource://devtools/shared/event-emitter.js:216:36
emit@resource://devtools/shared/event-emitter.js:153:10
_onTargetAvailable@resource://devtools/client/fronts/watcher.js:75:10
_emit@resource://devtools/shared/event-emitter.js:216:36
emit@resource://devtools/shared/event-emitter.js:153:10
onPacket@resource://devtools/shared/protocol/Front.js:371:13
onPacket@resource://devtools/client/devtools-client.js:541:13
send/<@resource://devtools/shared/transport/local-transport.js:52:25
exports.makeInfallible/<@resource://devtools/shared/ThreadSafeDevToolsUtils.js:103:22
exports.makeInfallible/<@resource://devtools/shared/ThreadSafeDevToolsUtils.js:103:22
    baseFrontClassDestroy resource://devtools/shared/protocol/Front.js:105
    destroy resource://devtools/shared/protocol/Front.js:73
    destroy resource://devtools/client/fronts/inspector.js:139
    destroy resource://devtools/shared/protocol/Pool.js:214
    baseFrontClassDestroy resource://devtools/shared/protocol/Front.js:109
    _onTargetDestroyed resource://devtools/shared/commands/target/target-command.js:424
    _emit resource://devtools/shared/event-emitter.js:216
    emit resource://devtools/shared/event-emitter.js:153
    _onTargetDestroyed resource://devtools/client/fronts/watcher.js:89
    _emit resource://devtools/shared/event-emitter.js:216
    emit resource://devtools/shared/event-emitter.js:153
    onPacket resource://devtools/shared/protocol/Front.js:371
    onPacket resource://devtools/client/devtools-client.js:541
    send resource://devtools/shared/transport/local-transport.js:52
    makeInfallible resource://devtools/shared/ThreadSafeDevToolsUtils.js:103
    makeInfallible resource://devtools/shared/ThreadSafeDevToolsUtils.js:103
resource-command.js:1223:15
19:50:22.579 Failed to start [root-node] legacy listener for target null Error: Connection closed, pending request to server0.conn0.watcher2.process348//domwalker549, type watchRootNode failed

Request stack:
request@resource://devtools/shared/protocol/Front.js:321:14
generateRequestMethods/</frontProto[name]@resource://devtools/shared/protocol/Front/FrontClassWithSpec.js:94:19
module.exports@resource://devtools/shared/commands/resource/legacy-listeners/root-node.js:62:31
async*_watchResourcesForTarget@resource://devtools/shared/commands/resource/resource-command.js:1210:42
_onTargetAvailable@resource://devtools/shared/commands/resource/resource-command.js:527:20
async*_emit@resource://devtools/shared/event-emitter.js:216:36
emitAsync@resource://devtools/shared/event-emitter.js:157:17
_onTargetAvailable@resource://devtools/shared/commands/target/target-command.js:272:33
async*_emit@resource://devtools/shared/event-emitter.js:216:36
emit@resource://devtools/shared/event-emitter.js:153:10
_onTargetAvailable@resource://devtools/client/fronts/watcher.js:75:10
_emit@resource://devtools/shared/event-emitter.js:216:36
emit@resource://devtools/shared/event-emitter.js:153:10
onPacket@resource://devtools/shared/protocol/Front.js:371:13
onPacket@resource://devtools/client/devtools-client.js:541:13
send/<@resource://devtools/shared/transport/local-transport.js:52:25
exports.makeInfallible/<@resource://devtools/shared/ThreadSafeDevToolsUtils.js:103:22
exports.makeInfallible/<@resource://devtools/shared/ThreadSafeDevToolsUtils.js:103:22
    baseFrontClassDestroy resource://devtools/shared/protocol/Front.js:105
    destroy resource://devtools/shared/protocol/Front.js:73
    destroy resource://devtools/shared/protocol/Pool.js:214
    baseFrontClassDestroy resource://devtools/shared/protocol/Front.js:109
    destroy resource://devtools/shared/protocol/Front.js:73
    destroy resource://devtools/client/fronts/inspector.js:139
    destroy resource://devtools/shared/protocol/Pool.js:214
    baseFrontClassDestroy resource://devtools/shared/protocol/Front.js:109
    _onTargetDestroyed resource://devtools/shared/commands/target/target-command.js:424
    _emit resource://devtools/shared/event-emitter.js:216
    emit resource://devtools/shared/event-emitter.js:153
    _onTargetDestroyed resource://devtools/client/fronts/watcher.js:89
    _emit resource://devtools/shared/event-emitter.js:216
    emit resource://devtools/shared/event-emitter.js:153
    onPacket resource://devtools/shared/protocol/Front.js:371
    onPacket resource://devtools/client/devtools-client.js:541
    send resource://devtools/shared/transport/local-transport.js:52
    makeInfallible resource://devtools/shared/ThreadSafeDevToolsUtils.js:103
    makeInfallible resource://devtools/shared/ThreadSafeDevToolsUtils.js:103
resource-command.js:1223:15
19:50:28.138 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/skin/classic/global/global.css network-events-content.js:84:15
19:50:28.139 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/browser/omni.ja!/chrome/browser/content/browser/screenshots/screenshots-buttons.css network-events-content.js:84:15
19:54:16.371
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:54:33.111
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:55:42.610
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:56:41.370
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:58:52.830
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:58:52.830
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:58:53.682
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:58:53.706
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:58:53.707
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:59:52.132
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
19:59:52.133
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
20:00:04.061 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/skin/classic/global/toolbarbutton.css network-events-content.js:84:15
20:00:04.062 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/skin/classic/global/arrowscrollbox.css network-events-content.js:84:15
20:00:04.084 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/skin/classic/global/menulist.css network-events-content.js:84:15
20:00:04.084 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/skin/classic/global/global.css network-events-content.js:84:15
20:00:04.085 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/content/global/elements/menupopup.css network-events-content.js:84:15
20:01:27.986
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
20:01:28.022
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
20:01:33.178
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
20:01:35.181
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
20:01:41.471
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
20:01:41.471
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
20:01:41.497
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
20:01:41.497
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
20:01:41.497
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
20:01:41.498
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
20:01:41.498
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
20:01:41.498
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
20:01:49.641
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
20:01:51.241 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/skin/classic/global/button.css network-events-content.js:84:15
20:01:51.241 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/skin/classic/global/dialog.css network-events-content.js:84:15
20:01:51.243 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/skin/classic/global/in-content/common.css network-events-content.js:84:15
20:01:51.483
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
20:01:52.716 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/skin/classic/global/global.css network-events-content.js:84:15
20:01:52.716 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/content/global/elements/menupopup.css network-events-content.js:84:15
20:01:52.716 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/skin/classic/global/toolbarbutton.css network-events-content.js:84:15
20:01:52.716 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/skin/classic/global/arrowscrollbox.css network-events-content.js:84:15
20:03:37.533 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/skin/classic/global/button.css network-events-content.js:84:15
20:03:37.533 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/skin/classic/global/dialog.css network-events-content.js:84:15
20:03:37.535 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/skin/classic/global/in-content/common.css network-events-content.js:84:15
20:04:18.074
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
20:04:18.115

    20:08:07.318
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
20:08:33.212 TypeError: WindowGlobalParent.drawSnapshot: Argument 2 is not a finite floating-point value.
    drawSnapshot chrome://global/content/elements/browser-custom-element.mjs:1863
    captureTabPreviewThumbnail resource://gre/modules/PageThumbs.sys.mjs:539
    #maybeRequestThumbnail chrome://browser/content/tabbrowser/tab-hover-preview.mjs:518
    activate chrome://browser/content/tabbrowser/tab-hover-preview.mjs:391
    activate chrome://browser/content/tabbrowser/tab-hover-preview.mjs:112
    on_TabHoverStart chrome://browser/content/tabbrowser/tabs.js:327
    handleEvent chrome://browser/content/tabbrowser/tabs.js:265
    _mouseenter chrome://browser/content/tabbrowser/tab.js:735
    on_mouseover chrome://browser/content/tabbrowser/tab.js:475
    handleEvent chrome://global/content/customElements.js:459
    MozTabbrowserTab chrome://browser/content/tabbrowser/tab.js:48
    _createTab chrome://browser/content/tabbrowser/tabbrowser.js:4156
    addTab chrome://browser/content/tabbrowser/tabbrowser.js:3389
    openLinkIn resource:///modules/URILoadingHelper.sys.mjs:602
    openLinkIn chrome://browser/content/utilityOverlay.js:124
    openLinkInTab chrome://browser/content/nsContextMenu.sys.mjs:1515
    <anonymous> chrome://browser/content/browser-context.js:44
tab-hover-preview.mjs:531:17
20:08:38.110
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
20:11:04.282
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
20:11:38.836
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
20:11:38.872
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
20:11:45.701
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
20:13:09.554 TypeError: WindowGlobalParent.drawSnapshot: Argument 2 is not a finite floating-point value.
    drawSnapshot chrome://global/content/elements/browser-custom-element.mjs:1863
    captureTabPreviewThumbnail resource://gre/modules/PageThumbs.sys.mjs:539
    #maybeRequestThumbnail chrome://browser/content/tabbrowser/tab-hover-preview.mjs:518
    activate chrome://browser/content/tabbrowser/tab-hover-preview.mjs:391
    activate chrome://browser/content/tabbrowser/tab-hover-preview.mjs:112
    on_TabHoverStart chrome://browser/content/tabbrowser/tabs.js:327
    handleEvent chrome://browser/content/tabbrowser/tabs.js:265
    _mouseenter chrome://browser/content/tabbrowser/tab.js:735
    on_mouseover chrome://browser/content/tabbrowser/tab.js:475
    handleEvent chrome://global/content/customElements.js:459
    MozTabbrowserTab chrome://browser/content/tabbrowser/tab.js:48
    _createTab chrome://browser/content/tabbrowser/tabbrowser.js:4156
    addTab chrome://browser/content/tabbrowser/tabbrowser.js:3389
    openLinkIn resource:///modules/URILoadingHelper.sys.mjs:602
    openLinkIn chrome://browser/content/utilityOverlay.js:124
    openLinkInTab chrome://browser/content/nsContextMenu.sys.mjs:1515
    <anonymous> chrome://browser/content/browser-context.js:44
tab-hover-preview.mjs:531:17
20:13:36.770
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
20:13:36.808
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
20:13:40.895
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
20:16:14.622
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
20:16:49.711
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
20:20:09.976 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/skin/classic/global/button.css network-events-content.js:84:15
20:20:09.976 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/skin/classic/global/dialog.css network-events-content.js:84:15
20:20:09.978 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/skin/classic/global/in-content/common.css network-events-content.js:84:15
20:20:11.149 DOMException: JSProcessActorParent.sendAsyncMessage: Actor 'ContentPrefs' cannot send message 'ContentPrefs:HandleCompletion' during shutdown.
    handleCompletion resource://gre/modules/ContentPrefServiceParent.sys.mjs:114
    safeCallback resource://gre/modules/ContentPrefUtils.sys.mjs:32
    cbHandleCompletion resource://gre/modules/ContentPrefUtils.sys.mjs:20
    onDone resource://gre/modules/ContentPrefService2.sys.mjs:290
    CPS2__execStmts resource://gre/modules/ContentPrefService2.sys.mjs:1083
    CPS2__get resource://gre/modules/ContentPrefService2.sys.mjs:272
    CPS2_getByDomainAndName resource://gre/modules/ContentPrefService2.sys.mjs:236
    receiveMessage resource://gre/modules/ContentPrefServiceParent.sys.mjs:130
    receiveMessage resource://gre/modules/ContentPrefServiceParent.sys.mjs:94
ContentPrefUtils.sys.mjs:34:13
20:20:11.175
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
20:20:11.175
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
20:20:28.694
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
20:21:58.554
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
20:21:58.554
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
20:23:26.972
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
20:23:27.010
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
20:25:04.184
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
20:25:05.701 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/skin/classic/global/toolbarbutton.css network-events-content.js:84:15
20:25:05.702 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/skin/classic/global/arrowscrollbox.css network-events-content.js:84:15
20:25:05.728 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/skin/classic/global/menulist.css network-events-content.js:84:15
20:25:05.728 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/skin/classic/global/global.css network-events-content.js:84:15
20:25:05.728 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/content/global/elements/menupopup.css network-events-content.js:84:15
20:25:06.175 GeckoMLEmbeddingsGenerator: Unable to initialize the ML engine and no Fallback was provided. Error: SecurityError: Failed to fetch the model file: https://model-hub.mozilla.org/mozilla/static-embeddings/v1.0.0/models/minishlab/potion-retrieval-32M/tokenizer.json.zst?download=true. Reason: Security error when calling GetDirectory getDirectoryHandleFromOPFS@chrome://global/content/ml/OPFS.sys.mjs:49:56
getFileHandleFromOPFS@chrome://global/content/ml/OPFS.sys.mjs:86:33
downloadToOPFSImpl@chrome://global/content/ml/OPFS.sys.mjs:198:30
downloadToOPFS@chrome://global/content/ml/OPFS.sys.mjs:296:24
getModelDataAsFile@chrome://global/content/ml/ModelHub.sys.mjs:2128:42
async*getModelFile@resource://gre/actors/MLEngineParent.sys.mjs:534:49
receiveMessage@resource://gre/actors/MLEngineParent.sys.mjs:411:21
EmbeddingsGenerator.sys.mjs:371:24
20:25:06.176 GeckoMLModelHub: Failed to fetch https://model-hub.mozilla.org/mozilla/static-embeddings/v1.0.0/models/minishlab/potion-retrieval-32M/fp16.d512.npy.zst?download=true: DOMException: The operation was aborted. 
    getEngine resource://gre/actors/MLEngineParent.sys.mjs:362
    createEngine chrome://global/content/ml/EngineProcess.sys.mjs:1254
    createEngineIfNotPresent chrome://global/content/ml/EmbeddingsGenerator.sys.mjs:342
    ensureEngine chrome://global/content/ml/EmbeddingsGenerator.sys.mjs:479
    infer resource://gre/modules/PlacesSemanticHistoryManager.sys.mjs:896
    startQuery moz-src:///browser/components/urlbar/UrlbarProviderSemanticHistorySearch.sys.mjs:130
    tryMethod moz-src:///browser/components/urlbar/UrlbarUtils.sys.mjs:3554
    startQuery moz-src:///browser/components/urlbar/UrlbarProvidersManager.sys.mjs:798
    start moz-src:///browser/components/urlbar/UrlbarProvidersManager.sys.mjs:838
    promise callback*start moz-src:///browser/components/urlbar/UrlbarProvidersManager.sys.mjs:837
    startQuery moz-src:///browser/components/urlbar/UrlbarProvidersManager.sys.mjs:512
    startQuery moz-src:///browser/components/urlbar/UrlbarController.sys.mjs:160
    startQuery chrome://browser/content/urlbar/UrlbarInput.mjs:2407
    _on_input chrome://browser/content/urlbar/UrlbarInput.mjs:5600
    handleEvent chrome://browser/content/urlbar/UrlbarInput.mjs:1098
    #connectedCallback chrome://browser/content/urlbar/UrlbarInput.mjs:479
    connectedCallback chrome://browser/content/urlbar/UrlbarInput.mjs:437
    insertWidgetBefore moz-src:///browser/components/customizableui/CustomizableUI.sys.mjs:2205
    notifyDOMChange moz-src:///browser/components/customizableui/CustomizableUI.sys.mjs:2235
    insertWidgetBefore moz-src:///browser/components/customizableui/CustomizableUI.sys.mjs:2203
    buildArea moz-src:///browser/components/customizableui/CustomizableUI.sys.mjs:1452
    registerToolbarNode moz-src:///browser/components/customizableui/CustomizableUI.sys.mjs:1297
    handleNewBrowserWindow moz-src:///browser/components/customizableui/CustomizableUI.sys.mjs:1958
    handleNewBrowserWindow moz-src:///browser/components/customizableui/CustomizableUI.sys.mjs:6972
    fn resource://gre/modules/BrowserUtils.sys.mjs:83
    callSingleListener resource://gre/modules/BrowserUtils.sys.mjs:763
    callModulesFromCategory resource://gre/modules/BrowserUtils.sys.mjs:808
    onDOMContentLoaded chrome://browser/content/browser-init.js:271
    EventListener.handleEvent* chrome://browser/content/browser-main.js:53
ModelHub.sys.mjs:2204:20
20:25:08.809
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
20:25:08.811
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
20:25:09.127
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
20:25:09.127
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
20:25:14.865 TypeError: WindowGlobalParent.drawSnapshot: Argument 2 is not a finite floating-point value.
    drawSnapshot chrome://global/content/elements/browser-custom-element.mjs:1863
    captureTabPreviewThumbnail resource://gre/modules/PageThumbs.sys.mjs:539
    #maybeRequestThumbnail chrome://browser/content/tabbrowser/tab-hover-preview.mjs:518
    activate chrome://browser/content/tabbrowser/tab-hover-preview.mjs:391
    activate chrome://browser/content/tabbrowser/tab-hover-preview.mjs:112
    on_TabHoverStart chrome://browser/content/tabbrowser/tabs.js:327
    handleEvent chrome://browser/content/tabbrowser/tabs.js:265
    _mouseenter chrome://browser/content/tabbrowser/tab.js:735
    on_mouseover chrome://browser/content/tabbrowser/tab.js:475
    handleEvent chrome://global/content/customElements.js:459
    MozTabbrowserTab chrome://browser/content/tabbrowser/tab.js:48
    _createTab chrome://browser/content/tabbrowser/tabbrowser.js:4156
    addTab chrome://browser/content/tabbrowser/tabbrowser.js:3389
    openLinkIn resource:///modules/URILoadingHelper.sys.mjs:602
    openLinkIn chrome://browser/content/utilityOverlay.js:124
    openLinkInTab chrome://browser/content/nsContextMenu.sys.mjs:1515
    <anonymous> chrome://browser/content/browser-context.js:44
tab-hover-preview.mjs:531:17
20:27:48.739 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/skin/classic/global/toolbarbutton.css network-events-content.js:84:15
20:27:48.739 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/skin/classic/global/arrowscrollbox.css network-events-content.js:84:15
20:27:48.766 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/skin/classic/global/menulist.css network-events-content.js:84:15
20:27:48.766 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/skin/classic/global/global.css network-events-content.js:84:15
20:27:48.766 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/content/global/elements/menupopup.css network-events-content.js:84:15
20:27:54.761 GeckoMLModelHub: Failed to fetch https://model-hub.mozilla.org/mozilla/tinybert-address-autofill/v0.1.0/config.json?download=true: DOMException: Security error when calling GetDirectory
    getDirectoryHandleFromOPFS chrome://global/content/ml/OPFS.sys.mjs:49
    getFileHandleFromOPFS chrome://global/content/ml/OPFS.sys.mjs:86
    downloadToOPFSImpl chrome://global/content/ml/OPFS.sys.mjs:198
    downloadToOPFS chrome://global/content/ml/OPFS.sys.mjs:296
    getModelDataAsFile chrome://global/content/ml/ModelHub.sys.mjs:2128
    getModelFile resource://gre/actors/MLEngineParent.sys.mjs:534
    receiveMessage resource://gre/actors/MLEngineParent.sys.mjs:411
ModelHub.sys.mjs:2204:20
20:27:54.762 GeckoMLModelHub: Failed to fetch https://model-hub.mozilla.org/mozilla/tinybert-address-autofill/v0.1.0/tokenizer_config.json?download=true: DOMException: Security error when calling GetDirectory
    getDirectoryHandleFromOPFS chrome://global/content/ml/OPFS.sys.mjs:49
    getFileHandleFromOPFS chrome://global/content/ml/OPFS.sys.mjs:86
    downloadToOPFSImpl chrome://global/content/ml/OPFS.sys.mjs:198
    downloadToOPFS chrome://global/content/ml/OPFS.sys.mjs:296
    getModelDataAsFile chrome://global/content/ml/ModelHub.sys.mjs:2128
    getModelFile resource://gre/actors/MLEngineParent.sys.mjs:534
    receiveMessage resource://gre/actors/MLEngineParent.sys.mjs:411
ModelHub.sys.mjs:2204:20
20:27:54.765 GeckoMLModelHub: Failed to fetch https://model-hub.mozilla.org/mozilla/tinybert-address-autofill/v0.1.0/tokenizer.json?download=true: DOMException: Security error when calling GetDirectory
    getDirectoryHandleFromOPFS chrome://global/content/ml/OPFS.sys.mjs:49
    getFileHandleFromOPFS chrome://global/content/ml/OPFS.sys.mjs:86
    downloadToOPFSImpl chrome://global/content/ml/OPFS.sys.mjs:198
    downloadToOPFS chrome://global/content/ml/OPFS.sys.mjs:296
    getModelDataAsFile chrome://global/content/ml/ModelHub.sys.mjs:2128
    getModelFile resource://gre/actors/MLEngineParent.sys.mjs:534
    receiveMessage resource://gre/actors/MLEngineParent.sys.mjs:411
ModelHub.sys.mjs:2204:20
20:27:54.796 GeckoMLModelHub: Failed to fetch https://model-hub.mozilla.org/mozilla/tinybert-address-autofill/v0.1.0/config.json?download=true: DOMException: Security error when calling GetDirectory
    getDirectoryHandleFromOPFS chrome://global/content/ml/OPFS.sys.mjs:49
    getFileHandleFromOPFS chrome://global/content/ml/OPFS.sys.mjs:86
    downloadToOPFSImpl chrome://global/content/ml/OPFS.sys.mjs:198
    downloadToOPFS chrome://global/content/ml/OPFS.sys.mjs:296
    getModelDataAsFile chrome://global/content/ml/ModelHub.sys.mjs:2128
    getModelFile resource://gre/actors/MLEngineParent.sys.mjs:534
    receiveMessage resource://gre/actors/MLEngineParent.sys.mjs:411
ModelHub.sys.mjs:2204:20

    20:37:38.739 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/skin/classic/global/button.css network-events-content.js:84:15
20:37:38.739 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/skin/classic/global/dialog.css network-events-content.js:84:15
20:37:38.741 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/skin/classic/global/in-content/common.css network-events-content.js:84:15
20:37:46.524
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
20:38:03.027
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
20:40:51.549
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
20:43:29.645 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/skin/classic/global/button.css network-events-content.js:84:15
20:43:29.645 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/skin/classic/global/dialog.css network-events-content.js:84:15
20:43:29.647 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/skin/classic/global/in-content/common.css network-events-content.js:84:15
20:43:30.719
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
20:43:30.720
InvisibleToDebugger: TypeError {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
20:44:31.149 Content process 4647 isn't responsive while sending "DevToolsProcessParent:addOrSetSessionDataEntry" request. DevTools will ignore this process for now. DevToolsProcessParent.sys.mjs:323:15
20:44:31.149 Content process 4663 isn't responsive while sending "DevToolsProcessParent:addOrSetSessionDataEntry" request. DevTools will ignore this process for now. DevToolsProcessParent.sys.mjs:323:15
20:44:31.149 Content process 4776 isn't responsive while sending "DevToolsProcessParent:addOrSetSessionDataEntry" request. DevTools will ignore this process for now. DevToolsProcessParent.sys.mjs:323:15
20:44:31.149 Content process 4792 isn't responsive while sending "DevToolsProcessParent:addOrSetSessionDataEntry" request. DevTools will ignore this process for now. DevToolsProcessParent.sys.mjs:323:15
20:44:31.149 Content process 4860 isn't responsive while sending "DevToolsProcessParent:addOrSetSessionDataEntry" request. DevTools will ignore this process for now. DevToolsProcessParent.sys.mjs:323:15
20:44:31.149 Content process 4884 isn't responsive while sending "DevToolsProcessParent:addOrSetSessionDataEntry" request. DevTools will ignore this process for now. DevToolsProcessParent.sys.mjs:323:15
20:44:31.149 Content process 4958 isn't responsive while sending "DevToolsProcessParent:addOrSetSessionDataEntry" request. DevTools will ignore this process for now. DevToolsProcessParent.sys.mjs:323:15
20:44:31.149 Content process 4985 isn't responsive while sending "DevToolsProcessParent:addOrSetSessionDataEntry" request. DevTools will ignore this process for now. DevToolsProcessParent.sys.mjs:323:15
20:44:31.149 Content process 5013 isn't responsive while sending "DevToolsProcessParent:addOrSetSessionDataEntry" request. DevTools will ignore this process for now. DevToolsProcessParent.sys.mjs:323:15
20:44:31.149 Content process 9539 isn't responsive while sending "DevToolsProcessParent:addOrSetSessionDataEntry" request. DevTools will ignore this process for now. DevToolsProcessParent.sys.mjs:323:15
20:44:31.149 Content process 464555 isn't responsive while sending "DevToolsProcessParent:addOrSetSessionDataEntry" request. DevTools will ignore this process for now. DevToolsProcessParent.sys.mjs:323:15
20:44:31.342 Content process 9539 is responsive again. DevTools resumes operations against it. DevToolsProcessParent.sys.mjs:343:17
20:44:31.342 Content process 4776 is responsive again. DevTools resumes operations against it. DevToolsProcessParent.sys.mjs:343:17
20:44:31.355 Content process 4958 is responsive again. DevTools resumes operations against it. DevToolsProcessParent.sys.mjs:343:17
20:44:31.422 Content process 5013 is responsive again. DevTools resumes operations against it. DevToolsProcessParent.sys.mjs:343:17
20:44:31.430 Content process 4860 is responsive again. DevTools resumes operations against it. DevToolsProcessParent.sys.mjs:343:17
20:44:31.430 Content process 4647 is responsive again. DevTools resumes operations against it. DevToolsProcessParent.sys.mjs:343:17
20:44:31.520 Content process 4663 is responsive again. DevTools resumes operations against it. DevToolsProcessParent.sys.mjs:343:17
20:44:31.900 Content process 4884 is responsive again. DevTools resumes operations against it. DevToolsProcessParent.sys.mjs:343:17
20:44:32.578 Content process 464555 is responsive again. DevTools resumes operations against it. DevToolsProcessParent.sys.mjs:343:17
20:44:34.928 Content process 4985 is responsive again. DevTools resumes operations against it. DevToolsProcessParent.sys.mjs:343:17
20:45:10.584 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/skin/classic/global/global.css 4 network-events-content.js:84:15
20:45:10.584 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/content/global/elements/menupopup.css 4 network-events-content.js:84:15
20:45:10.585 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/skin/classic/global/toolbarbutton.css 4 network-events-content.js:84:15
20:45:10.585 httpFailedOpeningRequest triggered on non-nsIHttpChannel for uri: jar:file:///usr/lib/firefox-nightly/omni.ja!/chrome/toolkit/skin/classic/global/arrowscrollbox.css 4 network-events-content.js:84:15
~~~

Some time later, it also returned:

  1. 20:47:31.827
InvisibleToDebugger: Exception {  }
DevToolsInfaillibleUtils.sys.mjs:22:13
20:47:31.828 NS_ERROR_NOT_AVAILABLE: Component returned failure code: 0x80040111 (NS_ERROR_NOT_AVAILABLE) [nsIHttpChannelInternal.remoteAddress]
    addResponseStart resource://devtools/server/actors/network-monitor/network-event-actor.js:674
    <anonymous> resource://devtools/shared/network-observer/NetworkObserver.sys.mjs:583
    makeInfallible resource://devtools/shared/DevToolsInfaillibleUtils.sys.mjs:43
DevToolsInfaillibleUtils.sys.mjs:22:13

  2. 20:47:43.909 TypeError: can't access property "isInProcess", browsingContext.currentWindowGlobal is null
    shouldIgnoreChannel resource://devtools/server/actors/resources/network-events.js:272
    <anonymous> resource://devtools/shared/network-observer/NetworkObserver.sys.mjs:443
    makeInfallible resource://devtools/shared/DevToolsInfaillibleUtils.sys.mjs:43
DevToolsInfaillibleUtils.sys.mjs:22:13
    reportException resource://devtools/shared/DevToolsInfaillibleUtils.sys.mjs:22
    makeInfallible resource://devtools/shared/DevToolsInfaillibleUtils.sys.mjs:49

These repeated, thereafter.

Since then, this has repeated frequently:

〃

Summary: DevTools rendered without any interface elements, except its sections’ backgrounds, and their borders. → DevTools reproducibly renders without any interface elements, except its sections’ backgrounds, and their borders, at some, but not all, URIs.
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