*** This bug is a duplicate of bug 1611737 *** https://bugs.launchpad.net/bugs/1611737
** This bug has been marked a duplicate of bug 1611737 Can't upgrade from a release if ros packages are installed from ROS servers -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1928498 Title: An unknown error is causing the upgrade from 16.04 to 18.04 to fail. No specific error name displayed. It only points out that it is unresolvable To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1928498/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs