I am trying to address these apt-get update issues to no avail. I have removed the tor browser yet still it prompts that the key could not be updated. I have tried to manually add the key server failure output. Can someone point me in the right direction?
bc@BC-Lair:~$ sudo apt-get update
Hit:1 http://us.archive.ubuntu.com/ubuntu focal InRelease
Hit:2 http://dl.google.com/linux/chrome/deb stable InRelease
Hit:3 http://us.archive.ubuntu.com/ubuntu focal-updates InRelease
Get:4 http://us.archive.ubuntu.com/ubuntu focal-backports InRelease [108 kB]
Get:5 http://security.ubuntu.com/ubuntu focal-security InRelease [114 kB]
Ign:6 https://repo.vivaldi.com/stable/deb stable InRelease
Hit:7 https://repo.vivaldi.com/stable/deb stable Release
Hit:8 https://packages.microsoft.com/ubuntu/16.04/prod xenial InRelease
Ign:9 http://download.videolan.org/pub/debian/stable InRelease
Get:10 http://download.videolan.org/pub/debian/stable Release [1,487 B]
Get:11 http://download.videolan.org/pub/debian/stable Release.gpg [287 B]
Ign:11 http://download.videolan.org/pub/debian/stable Release.gpg
Get:13 https://deb.torproject.org/torproject.org focal InRelease [2,812 B]
Err:13 https://deb.torproject.org/torproject.org focal InRelease
The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 74A941BA219EC810
Reading package lists... Done
W: GPG error: http://download.videolan.org/pub/debian/stable Release: Detached signature file '/var/lib/apt/lists/partial/download.videolan.org_pub_debian_stable_Release.gp g' is in unsupported binary format
E: The repository 'http://download.videolan.org/pub/debian/stable Release' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: https://deb.torproject.org/torproject.org focal InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 74A941BA219EC810
E: The repository 'https://deb.torproject.org/torproject.org focal InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
Attempt to address they key.
c@BC-Lair:~$ sudo apt-key adv --recv-keys --keyserver keys.ubuntu.com 74A941BA219EC810
Executing: /tmp/apt-key-gpghome.fIyNDJaZNt/gpg.1.sh --recv-keys --keyserver keys.ubuntu.com 74A941BA219EC810
gpg: keyserver receive failed: No name