I am filing for my 2018 but on my W2, I am seeing an amount on 2017 adding up to 2018 which makes me owe money (I filed my tax last year just like any other normal year)

I filed my 2017 just as what normal people do when filing. Is this some sort of bug or I really need to include my 2017? I already restarted my application from the start but it keeps the $amount on the 2017 keeps on showing up