Update app.py

app.py

@@ -4,7 +4,7 @@ import requests
 import inspect
 import pandas as pd
 from smolagents import CodeAgent, DuckDuckGoSearchTool, HfApiModel, OpenAIServerModel
-from llama_index.core.tools import (
+from llama_index.core import (
     VectorStoreIndex,
     SimpleDirectoryReader,
     VectorStoreIndex