Marking as "Invalid" as Thunderbird no longer installed so problem not reproducible. (Sorry if this reply on Launchpad creates a further but final email).
** Changed in: thunderbird (Ubuntu) Status: Incomplete => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1781571 Title: package thunderbird-dbg 1:52.6.0+build1-0ubuntu0.17.10.1 failed to install/upgrade: Le paquet est dans un état incohérent; vous devriez le réinstaller avant d'essayer de le supprimer. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1781571/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs