Ubuntu Gnome Software Update Hangs

Let's Encrypt certificate expiration ssh onto the machine where the certificate needs renewing. First stop the web server as it will interfere with the renewal process:- $ sudo systemctl stop nginx The do a dry run to check that everything is in order:- $ sudo certbot renew --dry-run If all goes well you should see something like:- Saving debug log to /var/log/letsencrypt/letsencrypt.log - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Processing /etc/letsencr...