Apparently issue still exists because today I updated from Linux Mint 18.3 to 20.04 (Ulyana) and received this exact error which was resolved by David Lechner's fix in post #3.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1574093 Title: Blueman networking plug-in broken in Xenial To manage notifications about this bug go to: https://bugs.launchpad.net/blueman/+bug/1574093/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
