Sites will not load

I have self hosted updraft central installed and have been using it to update 15 to 20 sites on a weekly basis for a while with now with no issues. Since the last WP update the page loads, but the sites do not come up, just the spinning ‘U’.

I’ve tried it on Chrome, and Firefox, with all plugins disabled, or not.
All plugins, themes (genesis), and core are up to date.

Any ideas?

The page I need help with: [log in to see the link]