I also have this bug on Ubuntu 18.04.1. This appears on a number of machines built from the minimal server ISO.
The fix was to run mkdir -p /var/lib/snapd/apparmor/snap-config ** Changed in: snapd (Ubuntu) Status: Expired => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1743079 Title: apparmor exit code 123 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apparmor/+bug/1743079/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs