Whenever my system tries to update itself after upgrading from 19.04 to 19.10, it fails. I'm not sure what or where the problem is so what should I do to get it to update?
Running sudo apt-get update && sudo do-release-upgrade gives several lines of output including this error:
Error: GDBus.Error:org.freedesktop.systemd1.UnitMasked: Unit -.mount is masked.
sudo apt-get update && sudo do-release-upgrade
, you'll get plenty of useful output— copy them here if there's any error.