Undefined symbols for architecture x86_64: "_OBJC_CLASS_$_SearchTagItem", referenced from:

Undefined symbols for architecture x86_64:  "_OBJC_CLASS_$_SearchTagItem", referenced from:

一般这个错误 常见的原因是 "_OBJC_CLASS_$_  后面的 类 或者 库 没有找到

而我导致这个错误

Undefined symbols for architecture x86_64:

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