Unspecified JS error- but was previously working and nothing has changed

URL of experiment:

Description of the problem: I was piloting my experiment and it was going fine- 4 people completed it… But now when I click on it it just says unspecified JS error and nothing loads. I have tried to sync again from my computer but it is not having any of it.

Any help would be greatly appreciated.

update: it runs on anything but Chrome

I faced the same issue today. Could not find the source of error. The error only disappeared after creating a new builder file and copy-pasting everything.