Associating error console messages with extensions

[rogerandjennifer]

I’m working on getting some rather complex extensions working for me. I see messages like these

19:55:24.734 1770944124734 addons.xpi WARN Checking C:\Program Files\Mozilla Thunderbird\distribution\extensions for addons

19:55:25.847 Window.fullScreen attribute is deprecated and will be removed in the future. messenger.js:947:9

19:55:29.014 1770944129014 addons.webextension.{a300a000-5e21-4ee0-a115-9ec8f4eaa92b} WARN Loading extension ‘{a300a000-5e21-4ee0-a115-9ec8f4eaa92b}’: Reading manifest: Warning processing locales: An unexpected property was found in the WebExtension manifest.

I assume that numbers like {a300a000-5e21-4ee0-a115-9ec8f4eaa92b} identify the extension, but don’t know where to look that up.

[hans_squared]

AFAIK, the only way is to put the extension ID into a search engine.
DuckDuckGo finds {a300a000-5e21-4ee0-a115-9ec8f4eaa92b} at https://reviewers.addons.thunderbird.net/En-us/thunderbird/addon/removedupes/reviews/247340/

For Firefox extensions, there’s a better way, but it doesn’t seem to work on addons.thunderbird.net:

Identifying Firefox extension by ID

In case you want to later correlate such an URL to the actual extension: Go to about:debugging in the browser, select “This Firefox” (or other release channel name). You should then see a list of all extensions (possibly after enabling debugging, if it prompts you for it), with three entries per extension, the first one is the ID, the second one this profile specific UUID and the third one will be a moz-extension URL to the extension’s manifest. Using the last two, you should be able to find th…