Update app.py

app.py

@@ -22,10 +22,12 @@ chain = create_chain_openai("gpt-4o-mini", prompt, retriever)
 
 @cl.on_chat_start
 async def main():
+    print("main")
     cl.user_session.set("midterm_chain", chain)
 
 @cl.on_message
 async def handle_message(message: cl.Message):
+    print("handle_message")
     chain = cl.user_session.get("midterm_chain")
     res = chain.invoke({"question": message.content})
     await cl.Message(content=res["response"]).send()