Updates Error - PPA (App Grid)

[dwbernel]

How do I correct this?
Thanks in advance!

===========================
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 ===========

Ign:2 http://linux.dropbox.com/ubuntu noble InRelease
Hit:3 https://dl.google.com/linux/chrome/deb stable InRelease
Hit:4 http://linux.dropbox.com/ubuntu noble Release
Hit:5 http://repo.linuxliteos.com/linuxlite galena InRelease
Hit:1 https://repository.spotify.com stable InRelease
Hit:6 https://packages.mozilla.org/apt mozilla InRelease
Ign:7 https://ppa.launchpadcontent.net/appgrid/stable/ubuntu noble InRelease
Hit:8 http://mirror.i3d.net/pub/ubuntu noble InRelease
Hit:9 https://ppa.launchpadcontent.net/mozillateam/ppa/ubuntu noble InRelease
Hit:10 http://mirror.i3d.net/pub/ubuntu noble-updates InRelease
Hit:11 https://ppa.launchpadcontent.net/mozilla...ext/ubuntu noble InRelease
Hit:12 http://mirror.i3d.net/pub/ubuntu noble-backports InRelease
Hit:14 http://mirror.i3d.net/pub/ubuntu noble-security InRelease
Err:15 https://ppa.launchpadcontent.net/appgrid/stable/ubuntu noble Release
  404  Not Found [IP: 185.125.190.80 443]
Reading package lists...
E: The repository 'https://ppa.launchpadcontent.net/appgrid/stable/ubuntu noble Release' does not have a Release file.
W: https://ppa.launchpadcontent.net/mozilla.../InRelease: Signature by key 0AB215679C571D1C8325275B9BDB3D89CE49EC21 uses weak algorithm (rsa1024)
W: https://ppa.launchpadcontent.net/mozilla.../InRelease: Signature by key 0AB215679C571D1C8325275B9BDB3D89CE49EC21 uses weak algorithm (rsa1024)