fix get remote address in app logging

backend/app.py

@@ -27,7 +27,7 @@ def log(response):
         'method': request.method,
         'url': request.url,
         'status': response.status_code,
-        'remote_addr': request.remote_addr,
+        'remote_addr': request.access_route[-1],
         'user_agent': request.user_agent.string,
     }