add api_token

app.py

@@ -17,7 +17,7 @@ DEFAULT_API_URL = "https://agents-course-unit4-scoring.hf.space"
 class BasicAgent:
     def __init__(self):
         # print("BasicAgent initialized.")
-        self.model = HfApiModel()
+        self.model = HfApiModel(token=os.getenv("HF_API_TOKEN"))
         self.agent = CodeAgent(tools=[DuckDuckGoSearchTool()],
                                model=self.model
                             )