Update app.py

app.py

@@ -9,7 +9,7 @@ from llama_index import (
     StorageContext,
     load_index_from_storage,
 )
-from langchain.chat_models import ChatOpenAI
+from langchain.chat_models import OpenAI
 import chainlit as cl
 
 
@@ -31,7 +31,7 @@ except:
 @cl.on_chat_start
 async def factory():
     llm_predictor = LLMPredictor(
-        llm=ChatOpenAI(
+        llm=OpenAI(
             temperature=0,
             model_name="gpt-3.5-turbo-0613:personal::7sckuHOj",
             streaming=True,