Hi all,
I am completely confused right now… Everytime I try to update the containers with docker-compose pull and then docker-compose up -d my nextcloud will end up in an error:
“Internal server error”
It looks like the nextcloud instance is not able to connect to the mysql db, but the DB is up and running and accessible. But that’s just a guess, because I am not able to find any logs which can tell me more 
Anybody else with this issue and was able to fix it?