in schedule A Line 1b(2) it is stating my date range of 1-1-2024 to 12-31-24 and when i review my return it states an error of 366 days. What am i doing wrong?

in schedule A Line 1b(2) it is stating my date range of 1-1-2024 to 12-31-24 and when i review my return it states an error of 366 days. What am i doing wrong?