I was trying to upgrade my Ubuntu Studio to 20.04 following the official guide here https://help.ubuntu.com/community/FocalUpgrades/UbuntuStudio
However when I get to the last step I reach an impass
When I run pkexec update-manager
I get this answer:
Unable to init server: Could not connect: Connection refused
Unable to init server: Could not connect: Connection refused
WARNING:root:can not import unity GI Namespace Dbusmenu not available
Unable to init server: Could not connect: Connection refused
(update-manager:8042): Gtk-WARNING **: 10:43:29.466: cannot open display:
And when I run sudo do-release-upgrade -m desktop
it says that there's no new release found.