Ubuntu 22.04.5 LTS server
sudo apt-get update yields:
W: GPG error: https://download.webmin.com/download/repository sarge Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY D97A3AE911F63C51```E: The repository 'https://download.webmin.com/download/repository sarge 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.Webmin has been UNINSTALLED.No other errors.
Apparently there is a reference to a repository that is no longer needed? I would think this makes the signature and pubkey moot.
gpg --list-keys returns null.
How do I eliminate these messages?
I would like to re-install webmin once this issue is resolved.
Thank you for all constructive input!