The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 46B5721DBBD2996A Err:10 https://ftp.postgresql.org/pub/pgadmin/pgadmin4/apt/focal pgadmin4 Release Certificate verification failed: The certificate is NOT trusted. The certificate chain uses expired certificate. Could not handshake: Error in the certificate verification. [IP: 87.238.57.227 443]