Just getting "Please wait..." and hourglass

[squirrelslair]

I have tried to submit several bits of php to the validator at https://stylize.toolforge.org/ in both FireFox and Edge, and am only getting an hourglass (waited >5min for 70 lines of pretty straightfwd code).

The code window block is grayed out, there is a "Please wait..." overlay, and there is a little bit of code or something showing at the bottom of the grayed out area that says
//JavaScript API use sample $.support.cors = true; $.post('//tools.wmflabs.org/stylize/jsonapi.php=stylizephp' {