Can't run Fortnite, Failed to open descriptor file "../../../FORTNI~1/...."

I played once this game, than it worked without a problem, it was like 4 weeks ago. Now, i reinstaled it again, and it doesn’t work at all. When I run Fortnite, it sais “Failed to open descriptor file ‘…/…/…/FORTNI~1/FortniteGame.uproject’.”.
I reinstaled it again, I did the same with Epic Games Launcher, still not fixed. What could I do?