Memory 0x0000 (memory couldn't be read) problem in launching fortnite

Whenever I launch fortnite, this error always came up and said “Memory error, memory couldn’t be read” which popped up my screen, and then they sent the main unreal engine crash report, I didn’t read because it was so long, so I just saw it as a memory problem, this problem only came up after I installed the latest update of fortnite on Jan. 28, 2018, btw, I’m using Epic Games Launcher, can anyone help me?