This sometimes occurs when using an out-of-date or less supported web browser.

Solution:

We strongly recommend using Google Chrome when accessing ARIVE, as this is the browser that our system is most thoroughly tested with. In almost all cases, Edge, Firefox, Safari, and others will also work flawlessly. Always make sure that whichever browser you're using is up-to-date to it's latest version, and if you encounter a problem with any of the other browsers try using Chrome instead.