Nextcloudpi internal server error on openmediavault (docker)

I have this error when I try to login my nextcloud home page.

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.

As i am new, I can’t upload pdf log file.

Thank you so much