I see – you’re using the upcoming list view, not the List view of the main calendar shortcode. In that view, I’d recommend going to the template editor to create your template and referencing it from there – you’ll find it easier to create templates with HTML that way.
In the list view, it appears like there’s a block of JavaScript that’s present and not throwing an error, but also not doing its job; I’m not sure why that is.
There’s a validation error on the page right before the script…but that’s not really that *likely* to trigger an error like this. I’ll have to explore that further.