White page on site in web editor

Hi! When I use exercism.org and try to write code in web editor. When page loaded I see only white page. How can fix it?
I clean cash and reboot machine.
My device - Macbook Air, OS - Monterey 12.5.1, Browser - Safari 15.6.1

Try another browser? Try force reloading the page?

You may need to update your Safari if possible or use a different browser like Isaac mentioned.