Fortnite update does not work?

I downloaded fortnite and then it got stuck at this window at 25.93 for over 2 hours then I deleted the game and then I started the ps4 at and still what I can do

Delete a game.

For example, Fortnite.

It makes no sense at all

It makes 50% sense. I think you have no storage space.

I have over 400G free?

The problem was with me too. Play on Xbox. My update was at 100% but couldn't start. I then uninstalled Fortnite again and downloaded it again. But before I learned something about the memory of the console. Don't know if it will help you with the PS4.