render pipeline makes grass transparent/invisible (Lightweight RP)

Hi, has the title says as soon as i add render pipeline to my project it makes grass transparent/invisible. i tried it in a new project as well and it just went completely invisible . i don't know if its shader related or not but pls i need help to fix this.


here is a pic to show, the thing that looks alike shadows on the mountain are the grass.
https://s1276.photobucket.com/user/terrorblade45/media/Namnloumls_zps2nid44zi.png.html?sort=3&o=0

 

changed to High RP fixed it for some reason,