Update error - NO PUBKEY opera, VLC unsupported ver.5.2

[LukeZarebsky]

Hello, I have a problem with update, also I can't install DEB packages..

Code:

===========================
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:2 http://dl.google.com/linux/chrome/deb stable InRelease
Hit:3 http://ppa.launchpad.net/audio-recorder/ppa/ubuntu focal InRelease
Hit:4 http://ppa.launchpad.net/freetuxtv/freetuxtv/ubuntu focal InRelease
Ign:5 http://ppa.launchpad.net/videolan/stable-daily/ubuntu focal InRelease
Err:6 http://ppa.launchpad.net/videolan/stable-daily/ubuntu focal Release
  404  Not Found [IP: 2620:2d:4000:1::81 80]
Hit:7 http://archive.ubuntu.com/ubuntu focal InRelease
Get:8 https://deb.opera.com/opera-stable stable InRelease [2 416 B]
Hit:1 https://repo.linuxliteos.com/linuxlite emerald InRelease
Hit:9 http://archive.canonical.com focal InRelease
Hit:10 http://archive.ubuntu.com/ubuntu focal-security InRelease
Hit:11 http://archive.ubuntu.com/ubuntu focal-updates InRelease
Hit:12 http://archive.ubuntu.com/ubuntu focal-backports InRelease
Err:8 https://deb.opera.com/opera-stable stable InRelease
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 11EE8C00B693A745
Reading package lists...
E: The repository 'http://ppa.launchpad.net/videolan/stable-daily/ubuntu focal Release' does not have a Release file.
W: GPG error: https://deb.opera.com/opera-stable stable InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 11EE8C00B693A745
E: The repository 'https://deb.opera.com/opera-stable stable InRelease' is not signed.

[stevef]

Support for that version of software ended in April 2025.
Please consider upgrading to a supported version or at least stop connecting the system to the Internet.

It is possible that your update/upgrade symptoms are caused by the end of support.
With the deb issue it is not possible to comment as you have not provided any details.