1982229 - Dev tool panel crashed

Status: RESOLVED DUPLICATE of bug 1979448

(DevTools :: General, defect, P3)

Description

[Jay Suthar]

Attachment: Screenshot 2025-08-10 at 3.04.40 PM.png

Error in Web Developer Tools:

Error: Protocol error (NS_ERROR_ILLEGAL_VALUE): Component returned failure code: 0x80070057 (NS_ERROR_ILLEGAL_VALUE) [nsIXPCComponents_Utils.getSandboxMetadata] from: server0.conn6.watcher3 (resource://devtools/server/connectors/js-process-actor/target-watchers/content_script.sys.mjs:137:0)

Client Packet:

{
  "type": "watchTargets",
  "targetType": "content_script",
  "to": "server0.conn6.watcher3"
}

Server Packet:

{
  "from": "server0.conn6.watcher3",
  "error": "NS_ERROR_ILLEGAL_VALUE",
  "message": "Component returned failure code: 0x80070057 (NS_ERROR_ILLEGAL_VALUE) [nsIXPCComponents_Utils.getSandboxMetadata]",
  "fileName": "resource://devtools/server/connectors/js-process-actor/target-watchers/content_script.sys.mjs",
  "lineNumber": 137,
  "columnNumber": 0
}

Server Stack:

createTargetsForWatcher@resource://devtools/server/connectors/js-process-actor/target-watchers/content_script.sys.mjs:137:25
#watchNewTargetTypeForWatcher@resource://devtools/server/connectors/js-process-actor/DevToolsProcessChild.sys.mjs:203:40
receiveMessage@resource://devtools/server/connectors/js-process-actor/DevToolsProcessChild.sys.mjs:306:50

Stacktrace:

onPacket/<@resource://devtools/shared/protocol/Front.js:404:31
DevTools RDP*request@resource://devtools/shared/protocol/Front.js:320:14
generateRequestMethods/</frontProto[name]@resource://devtools/shared/protocol/Front/FrontClassWithSpec.js:57:19
startListening@resource://devtools/shared/commands/target/target-command.js:532:35

Comment 1

[Nicolas Chevobbe [:nchevobbe]]

Thanks for the report Jay

This looks like Bug 1979448 , can you reproduce consistently? If so, could you provide the exact steps to reproduce the issue?
Could you go to about:support and share the data here? I'm particularly interested in which extensions are installed, as it seems to relate to one.

Comment 2

[Julian Descottes [:jdescottes]]

Closing as duplicate for now, but would still be intersted to get the feedback!