Nextcloud android app produces 500 errors on opening

When I open the android app or browse in folders the reverse proxy nginx results in a 500 http status code error 2 times.

The request is this.

GET /ocs/v2.php/apps/user_status/api/v1/predefined_statuses?format=json

What is that? What is it for? Why does it result in 500? I try to fail2ban stuff and wanted to look out for 500 errors as well, but this results in quick bans for regular nextcloud android app usage, as it produces 2 500 errors each time i click something or open the app…