I am running a single instance of Pritunl Zero to access several internal HTTP services. There are several admins changing the configuration (e.g. adding new services). Twice I had a strange behaviour: one admin added an additional service and this somehow broke Pritunl Zero completely. When I tried to access the web interface afterwards, all I got was a browser error saying: the site sent an invalid response - ERR_SSL_PROTOCOL_ERROR. So all I could do was restoring the VM from backup. Since then everything has been fine.
I managed to keep the disk with the invalid state and I would like to find out, what exactly happened (I think it is just a user error). Could you give me some pointers on which log files to look in? Just looking at the error, I suspect it has something to do with the TLS certificate. Is it possible to reset the TLS settings over CLI?