报错prefix attribute must be followed by an interface or protocol

  • 下载了个demo结果一打开就报错,看下载评论上都在说报错,看了一下,原来是分号用错位置了,或者说是少了分号;一般少了分号就好自动提示添加,但是这里用了一个宏UI_APPEARANCE_SELECTOR真是晕,如图;
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