Hello, and sorry for the late reply here. One possible workaround for such a problem would be to run upgrade your deb and/or snap package of snapd before attempting a system upgrade:
sudo apt update sudo apt install --only-upgrade snapd sudo snap refresh snapd -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1997154 Title: package firefox 87.0+build3-0ubuntu0.20.10.1 failed to install/upgrade: new firefox package pre-installation script subprocess returned error exit status 1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1997154/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs