"Please import a .png file of dimensions 64×64, 64×32 or 128×128" Issue

Hey Mojang, there a bug where when u want to use skin, the game will say "Please import a .png file of dimensions 64×64, 64×32 or 128×128", even tho its a .png and its dimension is 128×128, i hope u guys (Mojang team) fix this as soon as possible