1947657 - Can't access multiprocess toolbar with remote debugging via USB on Fenix Nightly

Status: RESOLVED DUPLICATE of bug 1931651

(DevTools :: General, defect)

Description

[Gabriel Luong [:gl] (ΦωΦ)]

Tried accessing multiprocess toolbox on Firefox Android Nightly and got the following error:

Error: 
TypeError: can't access property "setTargetType", this.targetFront is null

React Component Stack: {}

Stacktrace: 
_createFirstTarget@resource://devtools/shared/commands/target/target-command.js:575:5

Comment 1

[Nicolas Chevobbe [:nchevobbe]]

I can't reproduce with a Nightly client (2025-02-11) debugging a Nightly Fenix (2025-02-10)
Can you tell us which versions you're seeing this bug on Gabriel?

Also, can you tell us the tabs that are opened and if you have specific extensions installed?

Comment 2

[Alexandre Poirot [:ochameau]]

This seems to be bug 1931651. I can see that same exception when trying to debug Fenix without any tab opened.
And it works fine if I restart Fenix and open at least one tab before debugging it.

Comment 3

[Gabriel Luong [:gl] (ΦωΦ)]

I was using the latest Nightly client (2025-02-12) debugging Nightly Fenix (2025-02-11) and Debug build of Fenix. I did run into a different error while testing:

Error: 
Error: Protocol error (TypeError): can't access property "startsWith", actor.actorID is null from: server0.conn1.watcher21 (resource://devtools/server/actors/targets/target-actor-registry.sys.mjs:50:32)

Server Stack: getTargetActors@resource://devtools/server/actors/targets/target-actor-registry.sys.mjs:50:32
getTargetActorsInParentProcess@resource://devtools/server/actors/watcher.js:501:40
watchResources@resource://devtools/server/actors/watcher.js:606:31


Stacktrace: 
onPacket/<@resource://devtools/shared/protocol/Front.js:382:31
DevTools RDP*request@resource://devtools/shared/protocol/Front.js:299:14
generateRequestMethods/</frontProto[name]@resource://devtools/shared/protocol/Front/FrontClassWithSpec.js:47:19
_startListening@resource://devtools/shared/commands/resource/resource-command.js:1047:31

I do believe this still points to Bug 1931651 if I am reading this correctly.

Comment 4

[Julian Descottes [:jdescottes]]

Most likely a duplicate, feel free to reopen if you still have the issue!