Thanks for your answers. I've tried running the app locally but when I try to access these URL http://localhost:8080/admin https://localhost:8080/admin I receive error messages ("Insecure channel" and "SSL received a record that exceeded the maximum permissible length.(Error code: ssl_error_rx_record_too_long)")
So I couldn't get the local admin part to work. On production I can access the /admin via https. Niklas