Update app.py

app.py

@@ -2,11 +2,11 @@ import streamlit as st
 from dotenv import load_dotenv
 from PyPDF2 import PdfReader
 from langchain.text_splitter import RecursiveCharacterTextSplitter
-#from langchain_community.embeddings import HuggingFaceInstructEmbeddings
-#from langchain_community.vectorstores import FAISS 
-#from langchain.memory import ConversationBufferMemory
-#from langchain.chains import ConversationalRetrievalChain
-#from langchain.llms import HuggingFaceHub
+from langchain_community.embeddings import HuggingFaceInstructEmbeddings
+from langchain_community.vectorstores import FAISS 
+from langchain.memory import ConversationBufferMemory
+from langchain.chains import ConversationalRetrievalChain
+from langchain.llms import HuggingFaceHub
 from htmltemplates import css, bot_template, user_template
 
 def get_text_chunks(text):