Update app.py

app.py

@@ -1,7 +1,7 @@
 import streamlit as st
 from streamlit_chat import message
 import tempfile
-from langchain import *
+from langchain_openai import ChatOpenAI
 from langchain.document_loaders.csv_loader import CSVLoader
 from langchain.embeddings import HuggingFaceEmbeddings
 from langchain.vectorstores import FAISS