You should figure out what the amount in box 19 is.
How did you transfer the W-2 to TurboTax? Did you import it? Take a picture of it? Errors sometimes occur in importing or uploading. You have to check to make sure that everything in TurboTax matches the actual W-2.
Do you have the actual paper W-2 from your employer? Is there anything in box 19? If so, what is there? Employers sometimes put things in box 19 that belong in a different box.
Is your employer by any chance in New Jersey? New Jersey employers often put the FLI deduction in box 19. It should be entered in box 12. If it's not New Jersey, what state is it from?