In place upgrade from Open Media 5 to 7

E: The repository 'http://httpredir.debian.org/debian buster-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.

N: See apt-secure(8) manpage for repository creation and user configuration details.

Thanks for getting back to me that command not found?

I also tried going to Open Media 6 first but it can't find the file

Amazing thank you so much that did the trick, I just need repeat it on my other server which has docker running on it