MCreator can't compile custom mob model

Hello, i'm making a mod called Vanilla Expanded (1.16.5) and one of the stuff i was gonna add, is a turtle and i made the turtle on Blockbench (export version: 1.15-1.16(Mojmaps) ) after importing the texture and model to MCreator ( MCreator 2021.1.18117 ) i went on making the entity BUT something went wrong, this showed up

And then i see the console, apparently , it is an error with rendering the object, i don't know what to do, i have searched in multiple places, but none seem to help

if you want the .Java file, just reply