Update app.py

app.py

@@ -2,9 +2,9 @@ import streamlit as st
 import tempfile
 import logging
 from typing import List
-from langchain.document_loaders import PyPDFLoader
-from langchain.embeddings import HuggingFaceEmbeddings
-from langchain.vectorstores import FAISS
+from langchain_community.document_loaders import PyPDFLoader
+from langchain_community.embeddings import HuggingFaceEmbeddings
+from langchain_community.vectorstores import FAISS
 from langchain.llms import HuggingFacePipeline
 from langchain.chains.summarize import load_summarize_chain
 from langchain.schema import Document