vident, that is actually the error message I had, and changing the date manually in the form from various to 12/31/2020 worked.
I'll add that in the past, I have never used the interview for Form 1116. This year, I thought I would try it. Everything ended up so messed up that I deleted the 1116s and started over, manually linking from the K-1 and 1099-DIV.
