The browser connections to my RPi stopped working. The connection to <host name>:8754 still works but the connection to <host name>/dump1090/gmap.html fails with a 404 error. The same happens to the graphs1090 page. If I use the ip address instead of the host name the results are the same. The Rpi is still feeding data to multiple sites without any issues. Is there a way to diagnose and fix the problem? I'm a total Raspbian noob.