Update app.py

app.py

@@ -88,7 +88,7 @@ async def wait_for_key():
     if res:
         await cl.Message(content="setting up...", indent=1).send()
         # check if the key is valid
-        client = OpenAI(api_key=cl.user_session.get("api_key"))
+        client = OpenAI(api_key=res["content"])
         try:
             stream = client.chat.completions.create(
                 model=model,