xWiki don't start after install own certificate for apache

I installed my own certificate for apache webserver yesterday. It was really simple, BUT my xWiki won’t start now. I get error 504, service not avalaible.
I think, I have to make some changes in xWiki xonfiguration ??

Can anybody help?


Sorry, error 503 of course.

My solution was:

univention-app restart xwiki
univention-app update-certificates