Fallback runtime not available

The fallback runtime the default notebook asks us to use can be selected from the menu, but cannot be used, resulting in this popup message: “The fallback runtime version is unavailable at this time.”
Fallback runtime notes: TF-AT: Using the Fallback Runtime

Ignoring these instructions and just using a regular runtime seems to work. Perhaps the maintainers ought to update this notebook to avoid confusion.

Week 3 graded assignment: Google Colab

Thanks Andrew! We’ve bookmarked this so the note will be removed.