It's an IT error that hopefully will get resolved.
I'm sure the FD folk would like it resolved too so they don't have to print, scan & email folios to guests, that as far as the property knew was emailed to the guest when they checked them out. I have a friend who is a FDC who said it's a pain & they get yelled at by guests after the fact as though it was their fault, even though when they do the check out the system says 'folio emailed to guest', so this is on MAR & not the propert(ies).
FWIW - I've always done the front desk/paper receipt check out, but that's just my own personal habit. I like paper back-up.
Cheers.