Debin/Ubuntu install broken : resolv issue of packagecloud.io and minor bash install script issue

[mbrouillet]

Hello,
On line 201 the test "${version_id}" -lt 18 fails. It turns out version_id has decimals : 21.04. Not a blocking error.
But most importantly, the subsequent update fails as the DNS records to packagecloud.io seem wrong.
I forced both IPs of packagecloud.io 54.241.210.185 and 52.52.239.191 through /etc/hosts, same result.

Hit:1 http://archive.ubuntu.com/ubuntu hirsute InRelease
Hit:2 http://archive.ubuntu.com/ubuntu hirsute-updates InRelease                                      
Hit:3 http://archive.ubuntu.com/ubuntu hirsute-backports InRelease                                                         
Hit:4 http://ppa.launchpad.net/mixxx/mixxx/ubuntu hirsute InRelease                                                        
Hit:5 http://security.ubuntu.com/ubuntu hirsute-security InRelease                                                         
Ign:6 https://packagecloud.io/AllToMP3/alltomp3/ubuntu hirsute InRelease
Err:7 https://packagecloud.io/AllToMP3/alltomp3/ubuntu hirsute Release
  404  Not Found [IP: 52.52.239.191 443]
Reading package lists... Done
E: The repository 'https://packagecloud.io/AllToMP3/alltomp3/ubuntu hirsute 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.

[Borja Garcia]

This one is important!

[HedoNNN]

Yup I have the same issue.