Update app.py

app.py

@@ -103,7 +103,7 @@ async def factory():
     
 # Substitute your connection string here
    
-    query_engine = index.as_query_engine(response_mode="tree_summarize",
+    query_engine = index.as_query_engine(
         service_context=service_context,
         streaming=True,
     )
@@ -113,11 +113,10 @@ async def factory():
 
 
 
-
 @cl.on_message
-async def main(message):
+async def main(message: cl.Message):
     query_engine = cl.user_session.get("query_engine")  # type: RetrieverQueryEngine
-    response = await cl.make_async(query_engine.query)(message)
+    response = await cl.make_async(query_engine.query)(message.content)
 
     response_message = cl.Message(content="")