I exported the boss model from Moon (The Astronaut), I have a script for use the model in game, all seemed good, but when I compiled and enter to the game, I got this error:



It's my first time exporting a model to be animated in asset manager, so I don't know what I'm doing wrong. J_head seems to be a kind of joint, but how can I link the head with the body if the head isn't but a helmet?