I am a student in SC but my residence is TN. Why is not letting me complete my returns without doing tennessee but tennessee doesn't have state taxes?

It is giving me a "Important: Complete your nonresident return(s) first." but when I click it, it tells me the forms are not there. TN doesn't have state taxes so that is why it isn't there. I did not have this issue last year. How do I get past this?