Install Updates Error

[inaninck]

Hi, I have similar issues here. I installed 5.0 from scratch.
I hope there will be a solution available.
Thanks, Ivo
===========================
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://archive.canonical.com/ubuntu focal InRelease
Hit:2 https://brave-browser-apt-release.s3.brave.com stable InRelease
Get:3 https://brave-browser-apt-release.s3.brave.com focal InRelease [2.820 B]
Hit:4 http://us.archive.ubuntu.com/ubuntu focal InRelease
Get:5 http://security.ubuntu.com/ubuntu focal-security InRelease [107 kB]
Hit:6 http://us.archive.ubuntu.com/ubuntu focal-updates InRelease
Hit:7 http://us.archive.ubuntu.com/ubuntu focal-backports InRelease
Err:3 https://brave-browser-apt-release.s3.brave.com focal InRelease
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 4FE13824E3FFC656
Hit:8 http://repo.linuxliteos.com/linuxlite emerald InRelease
Reading package lists...
W: GPG error: https://brave-browser-apt-release.s3.brave.com focal InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 4FE13824E3FFC656
E: The repository 'https://brave-browser-apt-release.s3.brave.com focal InRelease' is not signed.