Problems to emulate after xCode update

[JFGomez]

solution is here, while the guys from ios-sim fix it

Ios-sim Does not recognize devices after xCode 10.2 update

try this: ionic cordova run ios -l -c -s --target="iPhone-X,com.apple.CoreSimulator.SimRuntime.iOS-12-2" -- --buildFlag="-UseModernBuildSystem=0" … the runtime needs to be specified with this format instead… don’t update ios-sim