Fixing GPG Keys missing public key in Ubuntu, Mint

The following signatures couldn’t be verified because the public key is not available

Err :

W: GPG error: http://repository.spotify.com stable InRelease: The following signatures couldn’t be verified because the public key is not available: NO_PUBKEY 4773BD5E130D1D45

SOLUTION

sudo apt-key adv — keyserver ha.pool.sks-keyservers.net — recv-keys

Ex :

sudo apt-key adv — keyserver ha.pool.sks-keyservers.net — recv-keys 4773BD5E130D1D45