Black screen on Balloon Analogue Risk Task

URL of experiment: https://run.pavlovia.org/Gough/bart/html

Description of the problem: I’m trying to conduct a research project using Pavlovia, but in piloting my study several participants have encountered a black screen about halfway through the task. This has happened on both chrome and Edge, and the computers it crashed on were both newer than mine. I’m not particularly literate when it comes to coding so I would really appreciate any help on this issue.