Update error - PPA

[thoughtinstinct]

Having also problem installing updates, although for some packages in my list i understand why.

===========================
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 the Software - Support - Updates section for assistance.

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

Hit:1 https://dl.google.com/linux/chrome/deb stable InRelease
Hit:2 http://archive.canonical.com/ubuntu jammy InRelease
Ign:3 http://ppa.launchpad.net/alexanderk23/ppa xenial InRelease
Hit:4 https://packages.microsoft.com/repos/edge stable InRelease
Hit:5 http://us.archive.ubuntu.com/ubuntu jammy InRelease
Err:6 http://ppa.launchpad.net/alexanderk23/ppa xenial Release
  404  Not Found [IP: 185.125.190.52 80]
Hit:7 http://security.ubuntu.com/ubuntu jammy-security InRelease
Hit:8 https://mirror.alpix.eu/linuxliteos fluorite InRelease
Hit:9 http://us.archive.ubuntu.com/ubuntu jammy-updates InRelease
Get:10 http://us.archive.ubuntu.com/ubuntu jammy-backports InRelease [108 kB]
Reading package lists...
E: The repository 'http://ppa.launchpad.net/alexanderk23/ppa xenial Release' does not have a Release file.