I am using the SportsPress plugin. When I active the Jevelin theme, I am not able to manage the competition configuration. E.g. when I try to edit a team I get a blank page and I can see a request that fails:
I did not manage to see any php error logs. I modified class-wp-rest-server.php to expose more information as part of the response.
I have noticed that the request also fails when Jevelin is not active (tested it manually writting the url in the browser). The difference is that when Jevelin is not active the page does not try to fetch that url when editing a team.
Looks like the logs didn’t upload correctly. We can offer you to login in to your website and try to debug it, but we can’t make any promises that we will find a solution.