Wrong APT URLs in Linux Mint 18

[Anton Krylov]

I have installed Getdeb using .deb package from the website, then I ran sudo apt-get update and it returned following errors:

W: The repository 'http://archive.getdeb.net/ubuntu serena-getdeb Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: Failed to fetch http://screenshots.getdeb.net/dists/serena-getdeb/apps/binary-amd64/Packages 404 Not Found [IP: 104.28.25.125 80]
E: Some index files failed to download. They have been ignored, or old ones used instead.

and I can't install any getdeb package. If I change 'serena' to 'xenial' in URL, then everything works.
Linux Mint is one of the most popular Linux distributions, so I think a simple check could be added to detdeb scripts. Ubuntu codename is stored in /etc/os-release under UBUNTU_CODENAME

[Alexandr Chibiriak (dobrman)]

i can confirm that bug :(