Error after update from

Hi there,
I get in the an Internal Server Error in my Browser after I tryed to update my Nextcloud from 21.0.1 to 21.0.2, Did anybody know to help me? My Nextcloud is running on a Truenas Server.

this is what I get in the browser

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.

I hope you cab help me.

Kind regards Leonarda