在我尝试使用 Xcode 构建我的应用程序后,出现此错误:
duplicate symbol _OBJC_IVAR_$_StoreVars._Traguardo in:
/Users/Fede/Library/Developer/Xcode/DerivedData/ProvaTapChallenge-bqumsaqmowwbdfbzgzrrwlblxsgh/Build/Intermediates/ProvaTapChallenge.build/Debug-iphonesimulator/ProvaTapChallenge.build/Objects-normal/i386/ViewController.o
/Users/Fede/Library/Developer/Xcode/DerivedData/ProvaTapChallenge-bqumsaqmowwbdfbzgzrrwlblxsgh/Build/Intermediates/ProvaTapChallenge.build/Debug-iphonesimulator/ProvaTapChallenge.build/Objects-normal/i386/ViewControllerBase.o
duplicate symbol _OBJC_METACLASS_$_StoreVars in:
/Users/Fede/Library/Developer/Xcode/DerivedData/ProvaTapChallenge-bqumsaqmowwbdfbzgzrrwlblxsgh/Build/Intermediates/ProvaTapChallenge.build/Debug-iphonesimulator/ProvaTapChallenge.build/Objects-normal/i386/ViewController.o
/Users/Fede/Library/Developer/Xcode/DerivedData/ProvaTapChallenge-bqumsaqmowwbdfbzgzrrwlblxsgh/Build/Intermediates/ProvaTapChallenge.build/Debug-iphonesimulator/ProvaTapChallenge.build/Objects-normal/i386/ViewControllerBase.o
duplicate symbol _OBJC_CLASS_$_StoreVars in:
/Users/Fede/Library/Developer/Xcode/DerivedData/ProvaTapChallenge-bqumsaqmowwbdfbzgzrrwlblxsgh/Build/Intermediates/ProvaTapChallenge.build/Debug-iphonesimulator/ProvaTapChallenge.build/Objects-normal/i386/ViewController.o
/Users/Fede/Library/Developer/Xcode/DerivedData/ProvaTapChallenge-bqumsaqmowwbdfbzgzrrwlblxsgh/Build/Intermediates/ProvaTapChallenge.build/Debug-iphonesimulator/ProvaTapChallenge.build/Objects-normal/i386/ViewControllerBase.o
ld: 3 duplicate symbols for architecture i386
clang: error: linker command failed with exit code 1 (use -v to see invocation)
我该如何解决这个问题?请帮帮我!