Fix 500 when endpoint does not exist

router.py

@@ -303,9 +303,9 @@ def get_public_endpoint(servicename: str, method: str):
 
 def get_authorized_endpoint(servicename: str, method: str):
     if not method in authorized_service_endpoints:
-        return None
+        return None, None
     if not servicename in authorized_service_endpoints[method]:
-        return None
+        return None, None
     return authorized_service_endpoints[method][servicename]
 
 @ app.route('/<servicename>', methods=['GET', 'HEAD', 'POST', 'PUT', 'DELETE', 'CONNECT', 'OPTIONS', 'TRACE', 'PATCH'])