Just used letsencrypt-auto and got
WARNING:certbot.cli:You are running with an old copy of letsencrypt-auto that does not receive updates, and is less reliable than more recent versions. We recommend upgrading to the latest certbot-auto script, or using native OS packages.
So upgraded to certbot-auto… requesting a new certifcate (added a new domain name for SNI certificate, 58 in total) results in
The server experienced an internal error :: Error creating new cert
(Got the same issue weeks ago and was fixed… something with timeouts on letsencrypt servers.)