Debian 11 standalone VM: 4.0 -> 4.1 repo upgrade failed

Since the forum is more active then the mailing list nowadays I’m starting a discussion here on the forum for this problem I sent to the mailing list:

If you have any idea on how this could be addressed, please let me know.
Thank you!

Try to use this script: qubes-dist-upgrade/ at release4.0 · QubesOS/qubes-dist-upgrade · GitHub

That’s how it should be done for Template/Standalone VMs to migrate from 4.0 to 4.1