forgot to add the tool you created to the list of usable tools

app.py

@@ -97,7 +97,7 @@ with open("prompts.yaml", 'r') as stream:
     
 agent = CodeAgent(
     model=model,
-    tools=[final_answer, image_generation_tool, get_current_time_in_timezone, DuckDuckGoSearchTool(), convert_currency], ## add your tools here (don't remove final answer)
+    tools=[final_answer, image_generation_tool, get_current_time_in_timezone, DuckDuckGoSearchTool(), convert_currency, wiki_of_person], ## add your tools here (don't remove final answer)
     add_base_tools=True,
     max_steps=6,
     verbosity_level=1,