Fortnite won't load. What to do?

I would like to play Fortnite. I've played a couple of rounds too. But sometimes I get stuck on the loading screen (see picture). I let it run for about 30 minutes and nothing worked. The three dots move and the bar goes to a certain point and then stops.

Maybe it's the internet or the servers. I don't know whether the servers are currently overloaded or down. Just wait a little more and check your internet.

Just keep trying, if necessary, to log out of Fortnite completely and then log in again

I uninstalled it and reinstalled it again. Now it works.