Download Calendar as PDF not working

[frankduncan]

In production at least, when you click "Downloadable PDF" when in the scheduler (/scheduler/calendar/2020 or similar), it doesn't download a pdf, or prompt, or even show. When looking at the page that the link goes to, it appears to be returning a response of html of some sort. Not sure how the format in the calendar_controller#show is supposed to work, but it doesn't seem to be doing the right thing.

In development, it does appear to be trying to do something with pdf kit, but that's as far as I've gotten.