With google dropping credits for mybinder.org recently i've noticed launching sessions are indeed more unreliable
https://blog.jupyter.org/mybinder-org-reducing-capacity-c93ccfc6413f

It would be good to document running this content on other "free" platforms such as:

• google colab
• aws sagemaker studio lab
• github codespaces