I need to upgrade my OS because Kubuntu 19.10 is apparently "end of life" and no longer allows updates. The update instructions I find say apt-get update && apt-get dist-upgrade. But apt-get update fails:
Ign:1 http://us.archive.ubuntu.com/ubuntu eoan InRelease
Ign:2 http://us.archive.ubuntu.com/ubuntu eoan-updates InRelease
Ign:3 http://us.archive.ubuntu.com/ubuntu eoan-backports InRelease
Ign:4 http://security.ubuntu.com/ubuntu eoan-security InRelease
Err:5 http://us.archive.ubuntu.com/ubuntu eoan Release
404 Not Found [IP: 91.189.91.39 80]
Err:6 http://security.ubuntu.com/ubuntu eoan-security Release
404 Not Found [IP: 2001:67c:1562::15 80]
Err:7 http://us.archive.ubuntu.com/ubuntu eoan-updates Release
404 Not Found [IP: 91.189.91.39 80]
Err:8 http://us.archive.ubuntu.com/ubuntu eoan-backports Release
404 Not Found [IP: 91.189.91.39 80]
Get:9 https://download.docker.com/linux/ubuntu eoan InRelease [43.0 kB]
Hit:10 http://archive.canonical.com/ubuntu eoan InRelease
Hit:11 http://repository.spotify.com stable InRelease
Hit:12 https://packages.riot.im/debian default InRelease
Ign:13 https://dl.bintray.com/stripe/stripe-cli-deb stable InRelease
Get:14 https://dl.bintray.com/stripe/stripe-cli-deb stable Release [1,840 B]
Get:15 https://dl.bintray.com/stripe/stripe-cli-deb stable Release.gpg [821 B]
Get:16 https://weechat.org/ubuntu eoan InRelease [3,997 B]
Get:17 https://dl.bintray.com/stripe/stripe-cli-deb stable/main amd64 Packages [6,036 B]
Get:18 https://weechat.org/ubuntu eoan/main Sources [3,891 B]
Get:19 https://weechat.org/ubuntu eoan/main i386 Packages [4,972 B]
Get:20 https://weechat.org/ubuntu eoan/main amd64 Packages [4,960 B]
Reading package lists... Done
E: The repository 'http://us.archive.ubuntu.com/ubuntu eoan 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 eoan-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.
E: The repository 'http://us.archive.ubuntu.com/ubuntu eoan-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 eoan-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.
On too many occasions I've had apt render my computer unusable. So I'm not willing to try apt-get dist-upgrade given that apt-get update can't even run successfully.
I saw some hackish looking solution about running sed on /etc/apt/sources.list, but it was also 10 years old (not trustworthy) so I didn't try it.
I can't install or update any software now. And the first command in the upgrade in upgrade instructions fails. I'm stuck. How do I get unstuck?