When I throw the stalker head, it makes a creates a duplicate as well. I'm not sure if this is intentional or a bug

Is there a way to make it invisible? I have used the material tool and the color tool and none of them makes them invisible, I would like that in an update it can be made invisible

error when someone sees me using it

[ERROR] lua/weapons/weapon_stalkerhead.lua:685: attempt to perform arithmetic on field 'ChargeFrac' (a nil value)
1. DrawLaserBeam - lua/weapons/weapon_stalkerhead.lua:685
2. v - lua/weapons/weapon_stalkerhead.lua:813
3. unknown - lua/includes/modules/hook.lua:96

The model's just straight up gone. It still casts a shadow when thrown, but the model's invisible. Although it would be cool if there was a feature for changing what model it uses apart from the Stalker's head