Update app.py

app.py

@@ -2,14 +2,14 @@ import streamlit as st
 from dotenv import load_dotenv
 from PyPDF2 import PdfReader
 from langchain.text_splitter import CharacterTextSplitter
-from langchain.embeddings import OpenAIEmbeddings, HuggingFaceInstructEmbeddings
-from langchain.vectorstores import FAISS
-from langchain.chat_models import ChatOpenAI
+from langchain_community.embeddings import OpenAIEmbeddings, HuggingFaceInstructEmbeddings
+from langchain_community.vectorstores import FAISS
+from langchain_community.chat_models import ChatOpenAI
 
 from langchain.memory import ConversationBufferMemory
 from langchain.chains import ConversationalRetrievalChain
 from htmlTemplates import css, bot_template, user_template, hide_st_style, footer
-from langchain.llms import HuggingFaceHub
+from langchain_community.llms import HuggingFaceHub
 from matplotlib import style