The problem is that the gpg key on the system has expired. Please login to the server via ssh and run the following:
sudo -u asterisk gpg --refresh-keys --keyserver pool.sks-keyservers.net
The problem is that the gpg key on the system has expired. Please login to the server via ssh and run the following:
sudo -u asterisk gpg --refresh-keys --keyserver pool.sks-keyservers.net