Update app.py

app.py

@@ -13,7 +13,8 @@ from typing import List
 from pydantic import Field
 from sentence_transformers import SentenceTransformer
 import numpy as np
-from langchain.vectorstores import VectorstoreIndexCreator
+from langchain.indexes.vectorstore import VectorstoreIndexCreator
+
 from sentence_transformers import SentenceTransformer
 import faiss