so guys, hopefully this tutorial has helped
please do make sure to comment below if this fix helped and to leave a like so others can see that it works
i tried out this Method in fixing my corrupt fortnite data, and it worked, i no longer have problems where i log in fortnite, play for 5-10 mins and imediately logs me out saying 'CANNOT CONTINUE USING THE APPLICATION'
*P.s the last step where it says follow steps below ('from Sony') i mean following the steps once on Sony's Support site (you'll get what i mean when you try the method)