Okay, I'm stumped. Any chance you are available between 1 and 3 MST today for the pretext zoom drop-in? I'll be there and we can troubleshoot this together. The url is
https://prose.runestone.academy/dropin/
A sure fix would be to downgrade the CLI to 2.3.4: `pip install pretext==2.3.4`. But long term, it would be good if we figured this out, and it would help me if I knew what was going on to make the CLI more robust.
Two other things to try:
1. In the github repository, switch to the gh-pages branch. Do you see a _static folder?
2. If you haven't tried it already, try building with `pretext build --clean`. I can't imagine this is the issue, but you never know.