求哪位大神指点下,该怎么办
beautyGallery[1594:27177] *** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<beautyGallery.ViewController 0x7f946b4a3710> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key beautyPick.'
按照老师的步骤来 出现来这个问题,求哪位做出来的大哥解释下,改怎么办呢