Minecraft 1.12.2 Crash then I Simple Voice Chat Mod and Locks Mod Playing

[Titoo8899]

Hi, the game Crash then I will Play with the 2 Mods Simple Voice Chat Mod and the Locks Mod. I have hope your mod VanillaFix can my Problem fix but the same think. It give me only a Exit -1 code out.

I hope you can help me. I have hear for the internet 2 versions of a Mixin in the mods can a Crash caused.