An unexpected error occurred - How can I debug failed PWA AdOn and not starting PWA's

[tigexplorer]

Maybe, after upgrading to ubuntu 24, but I'm not shure, the AdOn no more lists my installed PWAS and shows An unexpected error occurred.

Despite this, some PWA's are working correctly, but some don't start anymore.

How can I start debugging?

The log in .local/share/firefoxpwa/firefoxpwa.log seems to have only old messages

18:44:32 [ERROR] Failed to receive request

Caused by:
    0: Failed to read message size
    1: failed to fill whole buffer
18:44:40 [WARN] This will download the unmodified Mozilla Firefox and locally modify it
18:44:40 [WARN] Firefox is licensed under the Mozilla Public License 2.0
18:44:40 [WARN] Firefox is a trademark of the Mozilla Foundation in the U.S. and other countries
18:44:40 [WARN] This project is not affiliated with the Mozilla Foundation in any way
18:44:40 [WARN] By using this project you also agree to the Firefox Privacy Notice: https://www.mozilla.org/privacy/firefox/
18:44:40 [WARN] Check the Firefox website for more details: https://www.mozilla.org/firefox/
18:47:00 [WARN] No required 48x48 icon is provided
18:47:00 [WARN] Generating it from other available icons
18:47:00 [WARN] No required 48x48 icon is provided
18:47:00 [WARN] Generating it from other available icons
18:47:00 [WARN] No compatible or working icon was found
18:47:00 [WARN] Falling back to the generated icon from the name
18:47:00 [WARN] No required 48x48 icon is provided
18:47:00 [WARN] Generating it from other available icons
18:47:00 [WARN] No compatible or working icon was found
18:47:00 [WARN] Falling back to the generated icon from the name
19:47:30 [ERROR] Failed to receive request

Caused by:
    0: Failed to read message size
    1: failed to fill whole buffer
09:07:27 [WARN] No required 48x48 icon is provided
09:07:27 [WARN] Generating it from other available icons
11:44:15 [WARN] No required 48x48 icon is provided
11:44:15 [WARN] Generating it from other available icons

[filips123]

Please check this and obtain the extension logs. If you use Snap version of Firefox, also check this.

[tigexplorer]

Thanx,
that's what I had to do:
flatpak permission-set webextensions firefoxpwa snap.firefox yes