Hi,
I have Ubuntu 21.04 in my system. While I am upgrading, it is showing error as:
Ign:1 http://us.archive.ubuntu.com/ubuntu hirsute InRelease
Ign:2 http://us.archive.ubuntu.com/ubuntu hirsute-updates InRelease
Ign:3 http://us.archive.ubuntu.com/ubuntu hirsute-backports InRelease
Err:4 http://us.archive.ubuntu.com/ubuntu hirsute Release 404 Not Found [IP: 91.189.91.39 80]
Err:5 http://us.archive.ubuntu.com/ubuntu hirsute-updates Release 404 Not Found [IP: 91.189.91.39 80]
Ign:6 http://security.ubuntu.com/ubuntu hirsute-security InRelease
Err:7 http://us.archive.ubuntu.com/ubuntu hirsute-backports Release 404 Not Found [IP: 91.189.91.39 80]
Err:8 http://security.ubuntu.com/ubuntu hirsute-security Release 404 Not Found [IP: 185.125.190.36 80]
Reading package lists... Done E: The repository 'http://us.archive.ubuntu.com/ubuntu hirsute 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.
E: The repository 'http://us.archive.ubuntu.com/ubuntu hirsute-updates 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.
E: The repository 'http://us.archive.ubuntu.com/ubuntu hirsute-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.
E: The repository 'http://security.ubuntu.com/ubuntu hirsute-security 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.
Even, I am not able to upgrade Ubuntu, it is again showing error as: "Failed to download package file "
Please help .
Thanks
Ubuntu 21.04 is a non-LTS version and the updates for this version have been discontinued.
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