Updates won't download, is telling me to ask forum; error log below.

[finbarrus]

Thanks in advance for any advice

===========================
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:1 http://ppa.launchpad.net/bluetooth/bluez/ubuntu focal InRelease
Hit:2 http://archive.canonical.com/ubuntu focal InRelease
Err:3 http://ppa.launchpad.net/bluetooth/bluez/ubuntu focal Release
  404  Not Found [IP: 2001:67c:1560:8008::19 80]
Hit:4 http://us.archive.ubuntu.com/ubuntu focal InRelease
Hit:5 http://security.ubuntu.com/ubuntu focal-security InRelease
Hit:6 http://repo.linuxliteos.com/linuxlite emerald InRelease
Hit:7 http://us.archive.ubuntu.com/ubuntu focal-updates InRelease
Hit:8 http://us.archive.ubuntu.com/ubuntu focal-backports InRelease
Reading package lists...
E: The repository 'http://ppa.launchpad.net/bluetooth/bluez/ubuntu focal Release' does not have a Release file.

[TheDead]

You have to remove or correct the offending PPA : Err:3 http://ppa.launchpad.net/bluetooth/bluez/ubuntu
from the Software sources for the update to not give an error.

[finbarrus]

I see.  I'm a bit fresh to this; although I found it in Software Sources I don't seem to be able to delete it. Is there a simple way to do this?

[finbarrus]

OK, I unchecked it and the update is going ahead.  Thank you.