Why is my spouse not showing up as a dependent on our joint tax return? she is my spouse and she stays at home so I provide 100% she is my dependent

I File the same every year. Joint married and i've never had a problem with my wife showing up as one of my dependents For some reason this year i'm trying to file and it's not showing her As a dependent and it's the difference between getting Is getting a return or owing Otherwise I wouldn't care.