Nextcloud 21 - Error

I’m an happy Nextcloud user for a few years now (before I was using owncloud).

I did a manual upgrade to 21

But I get following error

Internal Server Error

The server encountered an internal error and was unable to complete your request.
Please contact the server administrator if this error reappears multiple times, please include the technical details below in your report.
More details can be found in the server log.

The actual nextcloud log doesn’t help, just an information about log rotation.

I get an error 500 5593 or 500 5272 in my apache2 logs
But I didn’t find anything about it.

Tryed almost everything… but I’m stuck.
Hope that someone can give me a hand !

Due to the fact that question about “Internal Server Error” messages and how they can be solved are asked and answered nearly on a daily base, you should find detailed information using the search function of this forum :wink:

So the usual question/answer is, have you made sure that all required PHP modules have correctly been installed and configred, and have you checked the content of the nextcloud.log file for any related messages which might point you to the root cause of the problem?