Xcode升级模拟器报错(com.apple.dt.Xcode.

今天把Xcode升级到了最新版本，点击编译报了以下错误

Assets.xcassets:-1: Failed to find a suitable device for the type IBSimDeviceTypeiPad2x (com.apple.dt.Xcode.IBSimDeviceType.iPad-2x) with runtime iOS 12.4 (12.4 - 16G73) - com.apple.CoreSimulator.SimRuntime.iOS-12-4

在终端上输入以下指令，点击确定，再次编译报错消失了

sudo killall -9 com.apple.CoreSimulator.CoreSimulatorService