Home Panel ssl error with lets encrypt

Hi, I get various ssl type errors in my log but this particular one is causing home panel to stop working:

    2019/04/09 15:11:14 [warn] 435#435: no resolver defined to resolve ocsp.int-x3.letsencrypt.org while requesting certificate status, responder: ocsp.int-x3.letsencrypt.org, certificate: "/ssl/fullchain.pem" - - [09/Apr/2019:15:11:15 +0000] "GET / HTTP/1.1" 200 2159 "-" "Mozilla/5.0 (iPad; CPU OS 12_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/73.0.3683.68 Mobile/15E148 Safari/605.1"
2019/04/09 15:11:19 [info] 435#435: *1 client closed keepalive connection (104: Connection reset by peer)

Anyone got any suggestions as to what is wrong. It appeared when I upgraded to release 91
both ssl files are in the ssl folder as before, nothing else is changed

Seems the password file had become corrupt. When I logging in under a new login and pass, the app now s is configured from the front end and so I guess it was a homepanel upgrade?!