This same issue show up *many* times during the upgrade from 16.04 to 18.04.
Many times. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1773045 Title: Radiance/gtk-3.20/gtk-main.css attempts to import nonexistent gnome- builder.css To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-themes/+bug/1773045/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs