TT did not calculate I owed any taxes and I already filed

There is no way to review your return prior to filing TT Premium online.  When I opened the saved PDF of my 2024 return, to review a different section of my return, I discovered TT did not calculate the amount of taxes I owed based on line 15, taxable income.  Line 16 is blank.  I did not over-ride any calculations. Yes, I earned enough that I do owe taxes based on the IRS tax table publication.  How is this even possible?