Update app.py

app.py

@@ -6,10 +6,11 @@ import pandas as pd
 from smolagents import CodeAgent, DuckDuckGoSearchTool, HfApiModel, OpenAIServerModel
 from llama_index.core import (
     VectorStoreIndex,
-    SimpleDirectoryReader,
-    VectorStoreIndex
+    SimpleDirectoryReader
 )
 from llama_index.llms.openai import OpenAI
+from llama_index.settings import Settings
+
 import os
 
 class BasicAgent: