update model id to qwen, because of 401 error

app.py

@@ -14,7 +14,8 @@ DEFAULT_API_URL = "https://agents-course-unit4-scoring.hf.space"
 class BasicAgent:
     def __init__(self):
         print("BasicAgent initialized.")
-        self.agent = CodeAgent(tools=[DuckDuckGoSearchTool()], model=HfApiModel())
+        self.agent = CodeAgent(tools=[DuckDuckGoSearchTool()], model=HfApiModel(
+            model_id = 'https://pflgm2locj2t89co.us-east-1.aws.endpoints.huggingface.cloud'))
 
     def __call__(self, question: str) -> str:
         print(f"Agent received question (first 50 chars): {question[:50]}...")