Update app.py

app.py

@@ -13,7 +13,7 @@ def message(message,history,profile: gr.OAuthProfile | None,oauth_token: gr.OAut
     print("Request headers dictionary:", request.headers)
     print("IP address:", request.client.host)
     print("Query parameters:", dict(request.query_params))
-    print("sign: ",request.query_params.__sign)
+    print("sign: ",request.query_params.get('__sign'))
     print("username:", request.username)
     print("Session hash:", request.session_hash)