Some example logs : https://pastebin.com/1swZWqfi
Using Forge : 2382 - Dev Environment
Note : I'm not installed other mods while testing....
This happens on an clean 1.12 workspace with Forge 14.21.0.2382. No additional code running.
From what I can tell, it started happening in Forge 14.21.0.2381, because of this added line: https://github.com/MinecraftForge/MinecraftForge/commit/93025510aec90cb89c4bc24eb8759a4aa5f6e215#diff-0d5fbfe5a2d8cc695738c40565be525cR119
Yes, Mezz screwed up, it is supposed to eat that error without message. He changed the for unknown reasons.
Would it be worth switching it to debug, or is this error entirely useless?
Its entirely useless it runs up the class tree to see if the method is an override, quite often it's not.