No one here has access to your returns. The best advice is to compare your returns side-by-side to see where any discrepancies are. It's possible that you've made an error in this year's return, or even in last year's.
There are other possibilities, as well. Maybe the information in the TurboTax FAQ below will help.
https://ttlc.intuit.com/replies/3301788
*** I am NOT a tax expert. I am a seasoned TurboTax user, and volunteer to provide assistance to TT users. Nothing I post is to be considered TAX ADVICE; I bear no legal liability for responses.***
