Crashing when launcher from Minecraft Launcher

[brnfhz]

I followed the instructions in readme.md, the changes are visible, but when I try to make a new world or join a server it crashes with this error: The game crashed whilst mouseclicked event handler Error: java.lang.NoSuchMethodError: 'java.lang.String com.mojang.authlib.yggdrasil.response.KeyPairResponse.getPublicKeySignature()' Exit Code: -1