Error message on debian13, update is unfortunately not possible. Question: what else needs to be added now?

user@debian-13-Program-neu2:~$ sudo apt update
Hit:1 Index of /r4.2/vm/ trixie InRelease
Ign:2 Index of linux/ubuntu/ trixie InRelease
Hit:3 Index of /debian trixie InRelease
Hit:4 Index of /debian-security trixie-security InRelease
Err:5 Index of linux/ubuntu/ trixie Release
404 Not Found [IP: 127.0.0.1 8082]
Error: The repository ‘Index of linux/ubuntu/ trixie Release’ does not have a Release file.
Notice: Updating from such a repository can’t be done securely, and is therefore disabled by default.
Notice: See apt-secure(8) manpage for repository creation and user configuration details.

user@debian-13-Program-neu2:~$ sudo apt upgrade
Error: dpkg was interrupted, you must manually run ‘sudo dpkg --configure -a’ to correct the problem.

user@debian-13-Program-neu2:~$ sudo apt autoremove
Error: dpkg was interrupted, you must manually run ‘sudo dpkg --configure -a’ to correct the problem.

user@debian-13-Program-neu2:~$

=============================
In der sources.list Datei steht:

deb Index of /debian bookworm main contrib non-free-firmware

deb-src Index of /debian bookworm main contrib non-free-firmware

deb Index of /debian-security bookworm-security main contrib non-free-firmware
deb-src Index of /debian-security bookworm-security main contrib non-free-firmware

deb Index of /debian bookworm-proposed-updates non-free-firmware contrib main
deb Index of /debian buster non-free

Strange. I have no problems updating from Debian 13 to QubesOS. Have you tried to run this command?