Issue with PIG_ZOMBIE

Summary

Mob with type PIG_ZOMBIE wont spawn.

# mob
pigzombieexample:
  Mobtype: PIG_ZOMBIE
  Health: 90
  Display: 'Mob Name'  
  Damage: 4

When trying to spawn pigzombieexample, i am getting Mob type may not be supported on this version of Minecraft. Enable debugging for more information..

MythicMobs version: 4.10.1

Server version: 1.15.2 (PaperSpigot)

With debug enabled error https://pastebin.com/46hyhdSs

I expect a pigman to be spawned.