ios - How to Solve Compiling "_OBJC_CLASS_$_xxxx", referenced from" Issue -

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error

i facing issue "_objc_class_$_xxxx", referenced from" in xcode project .i have done tricks available stackoverflow.adding .m files compile source no luck.i unable pointout issue . kindly please me regarding issue .i attach screenshot below ... in advance.

may u have missed import .m files in compile source .


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