It all points to add-ons updates (language pack mostly) that somehow are not fully compatible with thunderbird 78.3.
Those json startups may be somehow putting the references to undefined entities in the xmls > I too have this problem. It seems that if you go into your .thunderbird > directory and delete the file addonStartup.json.lz4, thunderbird is able > to start. Restarting tb usually causes the error to appearagain, but re- > deleting this file allows it to start again. > -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1901829 Title: thunderbird fails to open, xml parse error To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1901829/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
