Transition from Qubes 4.1 to 4.2 switch nftables for non-technical users what to do?

Need more info from the log, this single line is not telling much.

there is a message to enter it in the terminal for more “systemctl status efi.mount”

but at the end of the terminal, after showing the messages, you can’t enter anything and it only asks for a password… what password is this standalone without a password

if it’s not worth fixing, after all I have a backup and I can do the update again, I’m just wondering where this error comes from, maybe that’s why I jumped two versions and not one of Fedora?

You can enter login user and it shouldn’t ask for a password.

Maybe you didn’t have enough free space for upgrade and it run out of space during upgrade.
Or maybe there were some errors during the upgrade.
I guess you can try restore the qube from backup and check the free space on the disk before attempting to upgrade.