Please don’t be overly incendiary. This is a very engaged community who wants to see Julia prosper and grow, and you know this. You’ve previously asked how to gear your courses for success and gotten lots of engagement — and lots of suggestions on how to avoid surprises by distributing a stable and known-good environment of specific package versions to your students. I know we can continue to do better, but that’s a really good way of making sure things like this don’t happen to you or your students in the first place.
Very glad to hear you’ve resolved this!