Something weird with my minecraft...

[Mojo12]

So i opened minecraft and searched for anvil but instead it was called "Dead weight" and the slightly damaged one "tile.bwm:deadweight.slightlyDamage.name" 

What its that? some sort of error made by mojang? btw i used forge 1.12.2

[fcelon]

This is not an error made by Mojang. It looks like a mod with id bmw adds it's own anvil and the name for the damaged variant is messed up. What mods are you using?

[LexManos]

1.12 is no longer supported on this forum.

Please update to a modern version of Minecraft to receive support.