I am getting this problem with Ubuntu repositories for Ubuntu 18.10 created in Amsterdam region.
Does anyone experiencing this too?
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 18.10
Release: 18.10
Codename: cosmic
$ sudo apt-get update
Ign:1 http://mirrors.digitalocean.com/ubuntu cosmic InRelease
Ign:2 http://mirrors.digitalocean.com/ubuntu cosmic-updates InRelease
Ign:3 http://mirrors.digitalocean.com/ubuntu cosmic-backports InRelease
Err:4 http://mirrors.digitalocean.com/ubuntu cosmic Release
404 Not Found [IP: 104.24.116.209 80]
Err:5 http://mirrors.digitalocean.com/ubuntu cosmic-updates Release
404 Not Found [IP: 104.24.116.209 80]
Err:6 http://mirrors.digitalocean.com/ubuntu cosmic-backports Release
404 Not Found [IP: 104.24.116.209 80]
Reading package lists... Done
E: The repository 'http://mirrors.digitalocean.com/ubuntu cosmic 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://mirrors.digitalocean.com/ubuntu cosmic-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://mirrors.digitalocean.com/ubuntu cosmic-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.
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