Why does TurboTax report 529 contributions for 2021 for Ohio when I had none?

I live in Ohio but made no 529 contributions in 2021.  (I do not believe I have made any such contributions since 2017.)  However, TurboTax indicates on my Ohio portion of my taxes that I contributed $4,000 in 2021.  I cannot find anywhere to change this number.  Is this a carryover from earlier years?  (I cannot believe I would still have any funds left to carryover if that is the case.)   I have no idea how TurboTax determined this number nor any idea of how I can change it.