Working on a project, for whatever reason one of the pages I’m reading up on doesn’t load the math formulas, instead showing error messages. Frankly it’s annoying, as they were literally displaying perfectly fine the other day. Any help on this? Searching the internet brings up nothing useful.

Example

Edit: This was on firefox. Checked it on my phone’s firefox and chrome browsers and it still shows the error. This is probably on Wikipedia’s side of things.

Edit 2: https://en.m.wikipedia.org/wiki/Volume_of_an_n-ball