Minecraft skin doesn't save whenever I close Minecraft and open Minecraft agian

So here's the problem whenever I close Minecraft and the next day when I open Minecraft agian my Minecraft skin just doesn't save At All. And after that a message appears at the top says "called to load charcter 2" and then I have to go back into the skins section and make my skin again OVER AND OVER WHENEVER I OPEN MINECRAFT its so annoying and waste of time pls fix this mojang!