[1.12] Some Pets are not working

[johnfriedrich]

The following pets are not working after a quick test:

• slime
• magmacube
• silverfish
• wither
• zombie
• ocelot

And eventually more.
Except for ocelots, they just don't spawn.
No errors. Only get an error when spawning an ocelot pet:
https://pastebin.com/REXjU1bB
I know that parrots somehow are based on ocelots , as they are both tameable. Maybe this causes that.

[Techcable]

Fixed the issue with ocelot pets, which also affected any other pets with colored (like wolves or sheep).
Strangely after I fixed some other issues I was unable to reproduce the issue with non-ocelot pets.