UE4 on MacBook Air -Install Crashes

Hi,
Im trying to install UE4 with Epic game launcher installer .
When I press on the installation , On my mac ,
the install downloaded the update , and when it comes to install it just crashes all the time and restart.
it writes that An Unreal process has crashed : UE4 - EpicGamesLauncher.
I want to use UE 4 ASAP , please HELP MEEE