Error with custom entity model

hello, when i try to make a mob (with custom model) , but when i complete the mob programm says how mob has an error, but when i select a classic minecarft model, then mod is starting.

My workspace:
http://www.mediafire.com/file/caq3fu3shcpex08/Works+space.zip/file

Mc version: 1.12.2 forge