Update app.py

app.py

@@ -3,9 +3,7 @@ import os
 import sys
 import shutil
 import langchain
-from langchain.text_splitter import TokenTextSplitter,RecursiveCharacterTextSplitter
-from langchain.document_loaders import PyPDFLoader
-from langchain.document_loaders.pdf import PyPDFDirectoryLoader
+from langchain_community.text_splitter import TokenTextSplitter,RecursiveCharacterTextSplitter
 from langchain_community.embeddings import HuggingFaceEmbeddings
 from transformers import pipeline
 import torch