Update app.py

app.py

@@ -1,7 +1,7 @@
 import streamlit as st
 from langchain.document_loaders import PyPDFLoader
 from langchain.text_splitter import RecursiveCharacterTextSplitter
-from langchain.embeddings import TogetherEmbeddings
+from langchain_together import TogetherEmbeddings
 from langchain.vectorstores import FAISS
 from langchain.chat_models import ChatOpenAI
 from langchain.chains import RetrievalQA