ubuntu

$ sudo apt-get update
Hit:1 http://mirror.xeonbd.com/ubuntu-archive jammy InRelease
Hit:2 http://mirror.xeonbd.com/ubuntu-archive jammy-updates InRelease
Hit:3 http://mirror.xeonbd.com/ubuntu-archive jammy-backports InRelease
Hit:4 http://mirror.xeonbd.com/ubuntu-archive jammy-security InRelease
Hit:5 https://dl.winehq.org/wine-builds/ubuntu focal InRelease
Hit:6 https://dl.google.com/linux/chrome/deb stable InRelease
Hit:7 http://apt.postgresql.org/pub/repos/apt jammy-pgdg InRelease
Hit:8 https://ftp.postgresql.org/pub/pgadmin/pgadmin4/apt/jammy pgadmin4 InRelease
Hit:9 https://ppa.launchpadcontent.net/flatpak/stable/ubuntu jammy InRelease
Ign:10 https://ppa.launchpadcontent.net/maarten-baert/simplescreenrecorder/ubuntu jammy InRelease
Err:11 https://ppa.launchpadcontent.net/maarten-baert/simplescreenrecorder/ubuntu jammy Release
  404  Not Found [IP: 185.125.190.52 443]
Reading package lists... Done
W: https://dl.winehq.org/wine-builds/ubuntu/dists/focal/InRelease: Key is stored in legacy trusted.gpg keyring (/etc/apt/trusted.gpg), see the DEPRECATION section in apt-key(8) for details.
N: Skipping acquire of configured file 'main/binary-i386/Packages' as repository 'http://apt.postgresql.org/pub/repos/apt jammy-pgdg InRelease' doesn't support architecture 'i386'
E: The repository 'https://ppa.launchpadcontent.net/maarten-baert/simplescreenrecorder/ubuntu jammy 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.