Install Updates could not fetch the package cache information lists.

[acrome77]

Hello any idea what I need to do to fix this ?Install Updates could not fetch the package cache information lists. then i get this : I have no idea what this means if any one can help I will be eternally grateful I'm very new to Linux lite

Hit:1 http://repo.linuxliteos.com/linuxlite emerald In Release
Ign:2 http://ppa.launchpad.net/cschramm/blueman/ubuntu focal In Release
Hit:3 http://archive.canonical.com focal In Release
Hit:4 https://packages.microsoft.com/repos/ms-teams stable In Release
Hit:5 http://archive.ubuntu.com/ubuntu focal In Release
Get:6 http://archive.ubuntu.com/ubuntu focal-security In Release [107 kB]
Ign:7 http://ppa.launchpad.net/george-edison55...dev/ubuntu focal In Release
Ign:8 http://ppa.launchpad.net/george-edison55...are/ubuntu focal InRelease
Get:9 http://archive.ubuntu.com/ubuntu focal-updates In Release [111 kB]
Hit:10 http://ppa.launchpad.net/libreoffice/ppa/ubuntu focal In Release
Get:11 http://archive.ubuntu.com/ubuntu focal-back ports In Release [98.3 kB]
Err:12 http://ppa.launchpad.net/cschramm/blueman/ubuntu focal Release
  404  Not Found [IP: 91.189.95.83 80]
Err:13 http://ppa.launchpad.net/george-edison55...dev/ubuntu focal Release
  404  Not Found [IP: 91.189.95.83 80]
Err:14 http://ppa.launchpad.net/george-edison55...are/ubuntu focal Release
  404  Not Found [IP: 91.189.95.83 80]
Reading package lists...
E: The repository 'http://ppa.launchpad.net/cschramm/blueman/ubuntu focal Release' does not have a Release file.
E: The repository 'http://ppa.launchpad.net/george-edison55...dev/ubuntu focal Release' does not have a Release file.
E: The repository 'http://ppa.launchpad.net/george-edison55...are/ubuntu focal Release' does not have a Release file.