Well, since yesterday it seems that all my gpg keys for repositery are missing or unreadable, even keys from Ubuntu. If I ask : sudo apt-key list all of them are listed, but sudo apt update give me the traditionnal error :
The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 871920D1991BC93C
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://security.ubuntu.com/ubuntu noble-security InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 871920D1991BC93C
I tried to chmod -R 755 /etc/apt Re-importing keys from server (what is the best way to do it since apt-key is deprecated ?)
I don't understand why the preoblem appears suddenly (I installed wine following the official wine www : https://www.winehq.org/).
Can anyone help me about this please ?
