Update app.py

app.py

@@ -5,7 +5,7 @@ from typing import List
 from langchain_community.document_loaders import PyPDFLoader
 from langchain_community.embeddings import HuggingFaceEmbeddings
 from langchain_community.vectorstores import FAISS
-from langchain.llms import HuggingFacePipeline
+from langchain_community.llms import HuggingFacePipeline
 from langchain.chains.summarize import load_summarize_chain
 from langchain.schema import Document
 from langchain.text_splitter import RecursiveCharacterTextSplitter