Fortnite Crashed while launching after i updated it to the new version i.e. Season 4 update

How do i fix this

CK_dev_1 replied me before he asked me to end any on-going unreal/epic process from the task bar,it didnt worked.
Can someone help me sorting this problem out?

same with me too

I have the same problem. Before the update it crashed sometimes, but right now I’m unable to play.

same with me too.

Hello, thank you for reporting your issues with Fortnite. Although the crash reporter window directs you here, Answerhub is meant for issues relating directly to Unreal Engine 4 rather than our game titles. For assistance with Fortnite, please visit the following link:

http://fortnitehelp.epicgames.com/

If you cannot find the solution to the problem you’re encountering, please use the Email Us link on that page to contact Player Support for further assistance.

I have had the same problem ever since rebuilding my .