Issue on 4.17 Build

Hi everyone, I build UE4 4.17 on Xcode without error. But when I launch AR Sample Project, I have an issue on Xcode and the engine stay block to 35%.

Do you have an idea of this problem ?

Another information

Solution, found.

dispatch_async(dispatch_get_main_queue(), ^{
[[GSplashWindow contentView] setneedsDisplayInRect: GSplashScreenTextRects[InType]];
});