Hi, currently I am unable to update, upgrade or dist-upgrade (that's what I wanted).
Always I get:
...
Ign:13 http://httpredir.debian.org/debian bullseye-backports InRelease
Err:14 http://httpredir.debian.org/debian bullseye-backports Release
404 Not Found [IP: 2a04:4e42:8e::644 80]
Get:15 https://download.docker.com/linux/debian bullseye InRelease [43.3 kB]
Reading package lists... Done
E: The repository 'http://httpredir.debian.org/debian bullseye-backports Release' no longer has a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
What can I do to diagnose/solve the issue?
Thanks!