Update app.py

app.py

@@ -57,7 +57,7 @@ with open("prompts.yaml", 'r') as stream:
 agent = CodeAgent(
     model=model,
     tools=[get_current_time_in_timezone,
-           visit_webpage(),
+           VisitWebpageTool(),
         final_answer], ## add your tools here (don't remove final answer)
     max_steps=6,
     verbosity_level=1,