The repository

After i did sudo apt-get update i got this output:

Reading package lists… Done E: The repository ‘ focal 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.

So I’m wonder if the why I’m getting this: (null) Cannot refresh “snap-store”: snap “snap-store” has running app (ubuntu-software), pids:8844