There is a time lag sometimes between when you file a return for a refund and the debt indicator being put onto your account ... so you just slipped thru the cracks.
Check with the IRS for the current balance due then pay it online to reduce the interest & penalties from accruing.
https://www.irs.gov/payments/finding-out-how-much-you-owehttps://www.irs.gov/payments
