Sounds like it transferred over from 2018 so you didn't need to enter it again.   Delete your entry.

This is the workaround I found:

1. Go to the "Federal Carryover Worksheet", page 3.

On line 26a, remove the amount from under the "Other Property" column, but leave the amount under the "Cash" column.

2. Go also to the "Charitable Deduction Limits Worksheet For Carryover Contributions" and remove the amount the program had put on line 6, as a "noncash" contribution, but leave the "cash" contribution on line 7.

Perhaps these are bugs that need to be fixed.