Update app.py

app.py

@@ -5,7 +5,7 @@ import getpass
 import os
 import gradio as gr
 
-from langchain_community.llms import OpenAI
+from langchain_openai import OpenAI
 from langchain_community.vectorstores import Chroma
 from langchain_community.document_loaders import TextLoader
 from langchain.text_splitter import RecursiveCharacterTextSplitter, CharacterTextSplitter