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I have encountered this error:
No visible @interface for 'NSString' declares the selector 'JSONValue'.
The error occurs on:
NSDictionary * root = [responseString JSONValue];
NSArray *data = [root objectForKey:@"data"];
does anyone know how to fix it? Could I be missing a JSON file?
Add this line to the top of your .m file, where you try to call it: