[HANDS-ON BUG] Unit 2 smolagents final quiz Space is broken (404)

[saslifat-gif]

Describe the bug
The final quiz in Unit 2 smolagents is completely broken. The embedded
iframe points to a HuggingFace Space that returns 404.

To Reproduce

1. Go to https://huggingface.co/learn/agents-course/unit2/smolagents/final_quiz
2. The quiz iframe fails to load
3. The Space URL https://agents-course-unit2-smolagents-quiz.hf.space
   returns 404 (page not found)

Previously when partially accessible, it also threw:
410 Client Error: Gone — api-inference.huggingface.co is no longer supported, please use router.huggingface.co instead

Screenshots
[attach your screenshots here]

Additional context
The Space appears to have been deleted or moved. All learners are
currently unable to complete the Unit 2 smolagents final quiz.

[arnalph]

The hugging face space seems to be working, but the 410 Error persists.

@simoninithomas @sergiopaniego @burtenshaw
Can you assign the issue to me? I can update the endpoints in the space if that code access could be given.

[saslifat-gif]

Still seeing "Connection errored out" as of March 16, 2026. The issue persists.

[mfarragher]

Someone had a 404 Client Error back in July 2025 and multiple people have replied since then in that discussion to say the same, so client errors with this quiz go back nearly 9 months now.

I also get a similar Client Error issue: a 410 Client Error like in the image from this user.

I tried a workaround of duplicating the Space for the quiz in the Hugging Face hub and patching the code in there. However I had no success with that workaround (there was an error relating to dataset access).

There's an open PR that tries to address this issue in the quiz Space itself. The PR author has been thorough in the debugging to develop the solution for that PR. Please may that logic be reviewed? 🙏