Have you considered updating your drivers? I'm not going to lie, this is not really something I have any control upon. Epic Games made the engine, and this is a standard message that the engine decided to show you based on your hardware and software configuration.

Fortnite most likely runs a different version of the engine, perhaps even custom-made for their own needs.

If you need help to update your drivers, I'm happy to help you on the discord, but this is not something I will ever be able to fix. Any game made with that version of the engine will most likely have displayed this error message.