Error when clicking any button on game page (prevents Tritris from playing)

[RenegadeScooter]

The Tritris page seemed to be unresponsive, so I opened the dev tools and found that I was getting this error every time I clicked a button on the page:

p5.min.js:3 Uncaught TypeError: Cannot read properties of undefined (reading '_setProperty')
    at a.default.Element.<anonymous> (p5.min.js:3:251658)
(anonymous) @ p5.min.js:3

[leognon]

Which browser are you using?

That error is internal to a library Tritris uses, so it isn't able to tell me much.