Not able to access qwen inference model: Invalid username of password

[aswinpajayan]

With the code provided for client app.py
I am not able to access the inference model.

Error message:

   raise AgentGenerationError(f"Error in generating model output:\n{e}", self.logger) from e
smolagents.utils.AgentGenerationError: Error in generating model output:
401 Client Error: Unauthorized for url: https://router.huggingface.co/hf-inference/models/Qwen/Qwen2.5-Coder-32B-Instruct/v1/chat/completions (Request ID: Root=1-68315bcf-3b94db0e1523ae07246e9ef4;27f23374-cd3d-4a0e-b756-09d3dba4bcf7)

Invalid username or password.

Have the same issue while running the client from hugging face client as well

[aswinpajayan]

I was able to fix this by adding a hugging face access token and modifying the inferenceClient instantiation to use the token field.

note sure whether this is the right fix,
if it is, then is probably a good idea to add this to the completed code.

fix:

• generate HF token
• add the token to environment

      # to run locally. 
      export HF_API_TOKEN="<token>"
      # to run in hf space add the [same token to the space](https://discuss.huggingface.co/t/how-to-manage-user-secrets-and-api-keys/67948)
   

- modify [client app.py](https://github.com/huggingface/mcp-course/blob/main/units/en/unit2/gradio-client.mdx#complete-example) to the below 
```python 
import os

# ----------------------------# 

 tools = mcp_client.get_tools()

 model = InferenceClientModel(token=os.getenv("HF_API_TOKEN"))
 agent = CodeAgent(tools=[*tools], model=model)