Yippee!
We managed at last to round up all of the loose hedgehogs, gather up all of the brightly colored gears and machine parts, randomly shuffle all of the 1’s and 0’s, and what do you know, the website works again!
Lot’s of seemingly random deleting and reinstalling was involved. I once heard it said that any sufficiently advanced science is indistinguishable from magic.
Now time to go run an overdue back-up before the hedgehogs get loose again and muck something else up.