*** This bug is a duplicate of bug 1880344 *** https://bugs.launchpad.net/bugs/1880344
The issue was because the customized filesystem.squashfs was missing the /proc and /tmp directories. Ubiquity expects these directories to be present, because they are not automatically created during the installation process. Including empty /proc and /tmp (and /run) directories solved the problem. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1880277 Title: Ubiquity crashes on while installing Ubuntu 20.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1880277/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs