Internal Server Error after 16.0.1 Update

Hi. I have the same problem
I updated (from 15.0.4) to and everything went smooth but now i get an internal server error.
i have php 7.2.15
my sql 10.2.12
on qnap with qts 4.3.6
i don’t now what to do because there are no errors in my nextcloud.log
please help