Game crashes when i spawn a custom geckolib entity

There is one entity in the mod i am making that crashed the game as soon as i attacked it, it doesn't seem to happen anymore so i think i fixed it, i thought the problem was the models being outdated and not being in the newer version of the blockbench geckolib plugin, but still now the other mob i added keeps crashing the game and i don't even need to attack it, it just crashes after first 2 seconds being in the game. i am using the updated geckolib mcreator plugin AND the updated mcreator software. id be thankful if someone helped me.