The Unit 2 final quiz cannot generate feedback because the grader fails to resolve api-inference.huggingface.co, even though my solutions match the reference

🤗Hub
1

Hi Hugging Face Team,

I’m taking the SmolAgents Unit 2 Final Quiz and I’m unable to complete it because the feedback generation consistently fails with: NameResolutionError: Failed to resolve ‘api-inference.huggingface.co’`

I have already tried:

  • Chrome and Safari
  • Home Wi-Fi and my phone hotspot
  • Refreshing and resubmitting the quiz
  • Using the reference solutions shown by the grader

The main Hugging Face website (https://huggingface.co) is accessible, but the quiz cannot generate feedback because it cannot reach the inference API.

Could you please check whether this is an issue with the Unit 2 quiz grader or the backend service?

Thank you.

2

Yeah. An ongoing issue: LLM Course Final Code Quiz - Name ResolutionError (api-inference.huggingface.co) prevents certification - #4 by John6666

3

Thanks for reporting this — your description matches an upstream connectivity issue rather than
anything wrong with your quiz answers.

The Unit 2 grader calls the Hugging Face Inference API to generate feedback, and when the backend
cannot resolve api-inference.huggingface.co, the feedback step fails even if the submitted
solutions are correct. This is separate from the main website, which can still load normally.

Since you’ve already tried multiple browsers, networks, and resubmissions, the issue is almost
certainly on the grader side (DNS resolution or inference backend availability), not on your end.

The SmolAgents team will need to check the quiz’s feedback service and restore connectivity to the
Inference API. Once the resolver issue is fixed, the grader should be able to generate feedback
normally.

Thanks for the detailed troubleshooting — it helps confirm this is a backend problem rather than a
client-side one.