For Box 14 my W-2 form reads NJ DI -59.71 I tried to input that but I get an error saying: "Must be atleast 0" What do I do?

NJ DI is a mandatory contribution from you for the New Jersey Disability Insurance program.

A negative number here makes no sense, so please contact your employer and confirm what the number should be...it is likely $59.71, i.e., enter without the negative sign (or dollar sign, for that matter).