Smok Osub 80w plus stuck charging on 0%

I’ve had the Smok Osub 80w plus for a while, and have never had any problems with it. But now whenever I plug it in, the little animation of the battery shows up, but it never charges past 0%. I can feel the mod heating up as it would if it were really charging, but it won’t actually charge even to 1%. It’s just stuck charging at 0%.