Why cant I launch my Fortnite?

Whenever i launch my fortnite it pops up with something talking about a bug of some sort but i have no idea what to do.

Hello,

For Fortnite issues, please visit http://fortnitehelp.epicgames.com/

There you will find various troubleshooting articles as well as an Email Us button that you can use to get in touch with one of our support staff who can assist you further with this.

Thanks