It's not that big'a deal...

Minecraft Version: 1.12.2
Forge Version: 14.23.5.2808
MalisisCore Version: 6.4.0

[04:39:25] [main/WARN] [FML]: The coremod net.malisis.core.asm.MalisisCorePlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[04:39:25] [main/WARN] [FML]: The coremod MalisisCorePlugin (net.malisis.core.asm.MalisisCorePlugin) is not signed!