404 Not Found [IP: 2600:9000:20d6:ac00:3:db06:4200:93a1 443]
Hit:7 Index of /debian-security bullseye-security InRelease
Reading package lists… Done
E: The repository ‘Index of linux/ubuntu/ bullseye Release’ does not have a Release file.
N: Updating from such a repository can’t be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
this what it keeps showing what do I do pls?