when entering: sudo apt-get update, I get the following error
Hit:1 http://dl.google.com/linux/chrome/deb stable InRelease
Hit:2 http://ppa.launchpad.net/fingerprint/fingerprint-gui/ubuntu focal InRelease
...
Ign:9 http://old-releases.ubuntu.com/ubuntu focal InRelease
Ign:10 http://old-releases.ubuntu.com/ubuntu focal-updates InRelease
Ign:11 http://old-releases.ubuntu.com/ubuntu focal-backports InRelease
Err:12 http://old-releases.ubuntu.com/ubuntu focal Release
404 Not Found [IP: 2001:67c:1562::25 80]
Hit:13 http://packages.ros.org/ros/ubuntu focal InRelease
Err:14 http://old-releases.ubuntu.com/ubuntu focal-updates Release
404 Not Found [IP: 2001:67c:1562::25 80]
Err:15 http://old-releases.ubuntu.com/ubuntu focal-backports Release
404 Not Found [IP: 2001:67c:1562::25 80]
Reading package lists... Done
E: The repository 'http://old-releases.ubuntu.com/ubuntu 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.
E: The repository 'http://old-releases.ubuntu.com/ubuntu focal-updates 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.
E: The repository 'http://old-releases.ubuntu.com/ubuntu focal-backports 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.
I have checked out other forums on this website but none of them provided me with solutions that resolve this issue.
Any help would be appreciated,
Zador
