Update app.py

app.py

@@ -28,7 +28,7 @@ def chatbot(input_text, api_token):
     if api_token != os.environ["API_TOKEN"]:
         return 'API_TOKEN does not match'
     index = GPTSimpleVectorIndex.load_from_disk('index.json')
-    response = index.query(input_text, response_mode="accumulate")
+    response = index.query(input_text, response_mode="tree_summarize")
     return response.response
 
 iface = gr.Interface(fn=chatbot,