Fortnite launch PS4 crashes?

I'm playing Fortnite on PS4. Sometimes when I start Fortnite the Playstation crashes. I then always uninstall Fortnite and re-downloaded it. Then it works. Otherwise… Not anymore.

Buy, download & play cod. No fun. Do you get an error code? If so, then enter the code on the internet maybe you will find something

No! There's no error code. After I restart the Playstation it only says that I should write what happened.