Invalid/Corrupted skin won't load, making my skin turn into alex or steve

Everytime i load minecraft, i can't use my skins i bought. When i press "Equip the skin" on my skin packs, it said "Invalid or corrupted skin error". Now, i have to use Alex or steve because none of my skins won't load. I think the problem is with the Luke Skywalker: Dagobah skin from Star Wars Classics skin pack. It has been removed, but i used it because it is still there. 2 days after, the problem happened