Trouble launching

I downloaded the epic games launcher application and have downloaded unreal engine when I press launch nothing happens or just refreshes the application help pls!!

In your home folder, could you find a file like “AppData\Local\UnrealEngine\4.XX\Saved\Logs\UE4.log”?

If you can find it, please share it here

I’ve downloaded UE 4 and every time I tried to launch it keep crashing. I’m using Mac version 10.14.6 iMac. Any solution please?