Item Model Not Working In Game

[sturdy dagger]

My item model does not registering on the mob, can I get assistance?
summon zombie ~ ~ ~ {CustomNameVisible:0b,PersistenceRequired:1b,Health:200f,IsBaby:0b,CanBreakDoors:0b,Tags:["cyberWiz","boss","found"],CustomName:{"color":"dark_aqua","italic":false,"text":"Cybernetic Wizard"},equipment:{head:{id:"minecraft:egg",count:1,components:{"minecraft:item_model":"mobs/robowizard/still"}}},drop_chances:{head:0.000},attributes:[{id:"minecraft:max_health",base:200},{id:"minecraft:movement_speed",base:0.3}]}

Also I need a modeler for this datapack Jam that is due March 17th if anyones interested please dm me.

[stray socket]

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[balmy owl]

What Minecraft version?

[willow ridge]

not an issue with the model

[sturdy dagger]

1.21.5

this issues actually on hold

Im having the model fixed anyways theres other issues with it, texture wise

Its for a jam

[stray socket]

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