我已经实现了Appodeal框架，但之后我无法构建我的项目，因为它会产生以下错误。
duplicate symbol _OBJC_IVAR_$_MoPub._globalMediationSettings in:
/Users/ci-13/Library/Developer/Xcode/DerivedData/myproject-ewtecqfvsvbwpmbxhdskxxrchrda/Build/Intermediates/myproject.build/Debug-iphonesimulator/myproject.build/Objects-normal/x86_64/MoPub.o
/Volumes/Projects/myproject/Appodeal.framework/Appodeal(MoPub.o)
duplicate symbol _OBJC_CLASS_$_MoPub in:
/Users/ci-13/Library/Developer/Xcode/DerivedData/myproject-ewtecqfvsvbwpmbxhdskxxrchrda/Build/Intermediates/myproject.build/Debug-iphonesimulator/myproject.build/Objects-normal/x86_64/MoPub.o
/Volumes/Projects/myproject/Appodeal.framework/Appodeal(MoPub.o)