At line 2 it says
Could not execute entrypoint stage 'preLaunch' due to errors, provided by 'meteor-client' at 'com.llamalad7.mixinextras.MixinExtrasBootstrap::init'!
Seems that you're using "Meteor" instead of "Wurst"
either that or you have both clients inside the minecraft mods folder. And as far as I know, they are not compatible with each other, Check if you can find meteor and remove the mod, then try again
