Update app.py

app.py

@@ -7,8 +7,8 @@ def install_package(package):
 
 # Install required packages if they are not already installed
 required_packages = [
-    "PyPDF2", "streamlit", "langchain", "faiss-cpu", 
-    "sentence-transformers", "python-dotenv"
+    "PyPDF2", "streamlit", "langchain", "langchain-community",
+    "faiss-cpu", "sentence-transformers", "python-dotenv"
 ]
 for package in required_packages:
     try:
@@ -21,7 +21,7 @@ import streamlit as st
 from dotenv import load_dotenv
 from PyPDF2 import PdfReader
 from langchain.text_splitter import CharacterTextSplitter
-from langchain.vectorstores import FAISS
+from langchain_community.vectorstores import FAISS
 from langchain.memory import ConversationBufferMemory
 from langchain.chains import ConversationalRetrievalChain
 from langchain.llms import HuggingFaceHub