try use microsoft model instead

app.py

@@ -88,9 +88,9 @@ final_answer = FinalAnswerTool()
 model = HfApiModel(
 max_tokens=2096,
 temperature=0.5,
-model_id='microsoft/Phi-4-mini-instruct'
+model_id='microsoft/Phi-4-mini-instruct,
 #model_id='Qwen/Qwen2.5-Coder-32B-Instruct',# it is possible that this model may be overloaded
-custom_role_conversions=None,
+custom_role_conversions=None
 )