State tax filing

Thanks for your quick response. You are correct, I liv in Texas and only go to Oklahoma to visit the casino. I done this for years but I’ve never been advised to pay Oklahoma taxes for any gambling winnings until this year. I won a significant amount in 2020 but was not advised/informed to pay Oklahoma taxes on the winnings. I did include the winnings as income on my regular taxes but still was not made aware of Oklahoma tax requirements. I’m just wondering if this could come back as an illegal activity?