Update app.py

app.py

@@ -4,6 +4,7 @@ import streamlit as st
 from langchain.text_splitter import RecursiveCharacterTextSplitter
 from langchain.vectorstores import FAISS
 from langchain.prompts import PromptTemplate
+from langchain.embeddings import HuggingFaceEmbeddings 
 from transformers import AutoTokenizer, AutoModelForCausalLM, pipeline
 from sentence_transformers import SentenceTransformer
 import torch