/bo entities = junglemobs:conba

my entry in the config= "content": "entity:junglemobs:conba",

Thanks, I'll look into this. I tested it on three mods that each registered names differently, but this must be an outlier. This is v2.1? Which mod is this entity from?

Edit: This is a problem with Lycanite's Mobs. I posted an issue here.

I'm going to close this because the issue is part of Lycanite's Mobs, so look at the linked issue in the previous comment for further updates.

The problem was that there are two places where you should be giving an Entity it's translation key, and in Lycanite's this key is not the same in both places. Because of that, it's trying to translate the mismatched translation key which doesn't have a valid translation.