Error starting up game

[Leke2]

Failed to create input layout, c:\buildbot\release-win-x64\build\source\core\videobackends\d3d\nativevertexformat.cpp 16

This is what it shows me,5 hours ago Super Smash Bros. Brawl was working fine,now it doesn't even load up.

I'm using Dolphin 5.0-8991

I've tried changing up some settings,even looked up some YouTube videos,nothing works.