Portfolio slider not appearing

On only one of my portfolio pages, I’m not seeing my portfolio slider popup. I set up the page exactly the same as all my other portfolio items.

This is actually a huge problem for me – my entire website is just a portfolio page, with links to my individual projects. Without being able to show images at the top of my portfolio pages, the theme is useless to me. 🙁

My slider images aren’t huge – this happens even when I have a single image in the slider which is like 100kB, on a very fast connection.

Browsers exhibiting this problem:
Internet Explorer – 11.472.17134.0
Microsoft Edge – 42.17134.1.0
Google Chrome – 71.0.3578.98
Firefox – 63.0.3

Computer:
Windows 10 Home 64 bit
AMD Ryzen 2700x
Nvidia GTX 1080Ti
32GB DDR4

Here’s the page showing the problem – there should be a slider with 10-ish images in there: https://www.lachlansleight.com/projects/pixels-escape/

Ticket