Having the same issue. I worked on my taxes yesterday and they were completed, error free and ready to submit last night.
Came back to submit this afternoon and suddenly this error popped up out of nowhere and cannot be deleted or fixed. I got on the line with a TT rep like 15 minutes ago and she hadn't even heard of the error.
I found the reddit thread by Googling the issue, while the TT rep was looking for information.
Hopefully all filers are reporting the issue so they can patch whatever bug loaded overnight?
