Trouble following Grass tools tutorial

I have recently installed the unreal engine version 4.18 and I am trying to follow the tutorials offered by Epic to learn. The issue im having is that when i try applying grass to the landscape it turns black and the lighting issues tab says something about LOD 1+ may be incorrect. I’ve tried over and over to make sure it wasnt a misstep on my part but keep getting same results i will link the page of the tutorial and a screenshot of my project