Removing signature/key from Linux

I uninstalled Brave from a Debian spin:

apt purge brave-browser
apt autoremove

However, when I do an update (apt update), Brave’s signature/keys cause a problem:

W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: https://brave-browser-apt-release.s3.brave.com stable InRelease: The following signatures couldn’t be verified because the public key is not available: NO_PUBKEY A8580BDC82D3DC6C
W: Failed to fetch https://brave-browser-apt-release.s3.brave.com/dists/stable/InRelease The following signatures couldn’t be verified because the public key is not available: NO_PUBKEY A8580BDC82D3DC6C
W: Some index files failed to download. They have been ignored, or old ones used instead.

How do I delete Brave’s signature/keys?

This topic was automatically closed 30 days after the last reply. New replies are no longer allowed.