How was this an inaccuracy?

How was Nxh8 an inaccuracy??

You were just taking a piece instead of going for a checkmate in two moves. Black's move here is forced.
1. Qe5+, Kd3
2. Qe3#

ohk thanks

I should have added that inaccuracies aren't necessarily bad. Mistake and Blunder evaluations mean your position has become weaker in some way with a blunder being worse than a mistake. An inaccuracy just means you used more moves than you needed to accomplish the mission. Inaccuracies only hurt you when you don't have enough time on the clock for unnecessary moves.

Fortunately it was not a mistake.

Your username should be I_make_inaccuracies_16 rather than I_make_mistakes_16.

I already changed my name lol

And by mistakes I did not mean what stockfish considers mistakes