cannot update linux lite

[ThisIsMeta]

I need help with this one, I've looked around on the net and can't find any solutions

===========================
Install Updates Error log
===========================
Install Updates could not fetch the package cache information lists.
Go to https://www.linuxliteos.com/forums/ and paste the log below into a new or existing thread for assistance.

============ Log ===========

Hit:1 http://repo.linuxliteos.com/linuxlite emerald InRelease
Hit:2 https://repo.steampowered.com/steam stable InRelease
Hit:3 http://archive.canonical.com/ubuntu focal InRelease
Hit:4 http://us.archive.ubuntu.com/ubuntu focal InRelease
Hit:5 https://deb.opera.com/opera-stable stable InRelease
Get:6 http://us.archive.ubuntu.com/ubuntu focal-updates InRelease [111 kB]
Hit:7 http://ppa.launchpad.net/appgrid/stable/ubuntu focal InRelease
Get:8 http://security.ubuntu.com/ubuntu focal-security InRelease [107 kB]
Get:9 http://us.archive.ubuntu.com/ubuntu focal-backports InRelease [98.3 kB]
Ign:10 http://ppa.launchpad.net/libretro/gcc-fo...tro/ubuntu focal InRelease
Hit:11 http://ppa.launchpad.net/libretro/stable/ubuntu focal InRelease
Err:12 http://ppa.launchpad.net/libretro/gcc-fo...tro/ubuntu focal Release
  404  Not Found [IP: 91.189.95.83 80]
Reading package lists...
E: The repository 'http://ppa.launchpad.net/libretro/gcc-for-libretro/ubuntu focal Release' does not have a Release file.