Google Search Console is down at the moment (and they didn’t even put up a custom 404 page). Here’s what others are saying:
@boomtownig yep lots of seeing the 404 page
— Tanya c (@Tanya1C) October 26, 2016
— Matt (@UEMattT) October 26, 2016
We’ll keep this post updated with any statements from Google or new developments that arise.
Update 10:23AM: Search Console is back online. It was down for about 20 minutes.