Update app.py

app.py

@@ -9,7 +9,7 @@ from huggingface_hub import InferenceClient
 import json
 from final_answer import FinalAnswerTool
 from visit_webpage import VisitWebpageTool
-from web_search import DuckDuckGoSearchTool
+from web_search import web_search_DuckDuckGoSearchTool
 from wikipediaLookup import WikipediaLookupTool
 
 api_url = "https://agents-course-unit4-scoring.hf.space"