Got 19 account confirmation emails

Not sure where to put this, but when I signed up a few minutes ago I got 19 account confirmation emails instead of just one. They seemed to have stopped now.

As far as I can tell, only the first email actually contained a valid link. I tried clicking the link in another one first, but when the page loaded and I clicked the “confirm your account” button, I got an error message saying “invalid CSRF”.