I am not able to renew my Letsencrypt Certificate in Virtualmin and get the following error message.
www.mydomain.de challenge did not pass: Fetching https://mydomain.de.well-known/acme-challenge/sLbX89QX1h96kP6Vqqq256wPXR... Error getting validation data
I set automatic renewal to 2 months, it worked once (website exists only since Aug 2018). Last successful renewal was mid Oct 2018. The only thing I changed till then, I think, was to go for a letsencrypt wild card certificate for all subdomains. Maybe this could cause the trouble!?
Renewal via command line and restarting webmin didn't solve the problem.
I am a newbie and completely clueless. Any help would be very much appreciated!!
Virtualmin 6.05 Webmin 1.9 Centos 7.6