FYI I’ve updated the hellowebapp-deploy package to install the specific version of whitenoise before the breaking changes: https://pypi.org/project/hellowebapp-deploy/
If anyone would like to reinstall to get the correct version number, use this (which’ll also prevent install off the old/cached version):
pip install hellowebapp-deploy --no-cache-dir
Thanks again to @Alex for letting me know about this issue.
Re: updating HWA, I’m still looking into what would be the best way to announce bugs or updates based on external package updates on the hellowebbooks.com website, I’ll have an announcement of sorts about that soon. 👍