shiny::includeMarkdown() breaks shiny live

[rbcavanaugh]

I'm trying to include some additional markdown text in a basic shiny live website. However, adding a bit of text using shiny::includeMarkdown() results in a blank white page in both Safari and Chrome. Inspecting the HTML shows an empty page:

See minimal example here: https://github.com/rbcavanaugh/shinylive-issue, where shinylive-start.R holds these two lines to run the app.

shinylive::export(here::here(), here::here("site"))
httpuv::runStaticServer("site/")

The Old Faithful app works fine per the example code (comment out the includeMarkdown() on app.R line 21.

Thanks!