Update app.py

app.py

@@ -8,8 +8,8 @@ import tempfile
 from typing import List, Dict, Tuple, Optional
 from dataclasses import dataclass
 import subprocess
-from llama_index import VectorStoreIndex, SimpleDirectoryReader, StorageContext, load_index_from_storage
-from llama_index.vector_stores import SimpleVectorStore
+from llama_index.core import VectorStoreIndex, SimpleDirectoryReader, StorageContext, load_index_from_storage
+from llama_index.vector_stores.types import VectorStore
 from docx import Document
 import fitz  # PyMuPDF
 import shutil