root@irc-bouncer:~# sudo add-apt-repository ppa:aslatter/ppa


 More info: https://launchpad.net/~aslatter/+archive/ubuntu/ppa
Press [ENTER] to continue or Ctrl-c to cancel adding it.
Hit:1 http://archive.ubuntu.com/ubuntu focal InRelease
Get:2 http://ppa.launchpad.net/aslatter/ppa/ubuntu focal InRelease [18.0 kB]
Hit:3 http://archive.ubuntu.com/ubuntu focal-updates InRelease
Hit:4 http://archive.ubuntu.com/ubuntu focal-security InRelease
Ign:5 http://ppa.launchpad.net/mamarley/quassel/ubuntu focal InRelease
Hit:6 http://ppa.launchpad.net/mamarley/quassel-git/ubuntu focal InRelease
Hit:7 http://ppa.launchpad.net/thomas-schiex/blender/ubuntu focal InRelease
Err:8 http://ppa.launchpad.net/mamarley/quassel/ubuntu focal Release
  404  Not Found [IP: 91.189.95.85 80]
Get:9 http://ppa.launchpad.net/aslatter/ppa/ubuntu focal/main amd64 Packages [540 B]
Get:10 http://ppa.launchpad.net/aslatter/ppa/ubuntu focal/main Translation-en [188 B]
Reading package lists... Done
E: The repository 'http://ppa.launchpad.net/mamarley/quassel/ubuntu focal 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.