I ran into this issue today as well. Performing the following can recreate the issue on Ubuntu 18.04.3 LTS:
$ sudo apt remove maas $ sudo apt remove autoremove $ sudo apt install maas This was fixed by the previous suggestion: $ sudo apt autoremove --purge maas $ sudo apt install maas -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1281758 Title: re-installing maas-region-controller fails To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1281758/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs