The script fails to open the import button in the sidebar, but all the other buttons / links (for label, artist, etc. redirections to MusicBrainz) are properly showing.
I've tried basically everything, log out and back in, deactivate ad blocker, change language, manually update and reinstall script, but the same behavior happens on three different computers (all with Firefox / Windows).

The script fails to open the import button in the sidebar, but all the other buttons / links (for label, artist, etc. redirections to MusicBrainz) are properly showing.
I've tried basically everything, log out and back in, deactivate ad blocker, change language, manually update and reinstall script, but the same behavior happens on three different computers (all with Firefox / Windows).