Here we go again, the Corvid whack-a-mole.
Your ticket number: 103603290
Have not touched any of the member signup code in a long while - 1300+ sign ups with that code in a few weeks.
Also, it is the same code provided in the Corvid API:
Register a user sending an email for confirmation
Out of the blue, nobody can sign up a new account - including myself.
Poked around, placed the doRegistration in the front (vs backend, where it was) and I get this error in the console:
The "Notifications" inbox in the top right of the dashboard (next to login) also stopped working around the same time.