For some reason there are npc_citizens spawning around with no model, an error sign and the model of the Ace 23. When I look in the console, I'm getting this error:

[PWB 2 Assault Rifles] lua/weapons/weapon_pwb2_ace23.lua:195: attempt to call method 'GetViewPunchAngles' (a nil value)
1. PrimaryAttack - lua/weapons/weapon_pwb2_ace23.lua:195
2. unknown - gamemodes/base/entities/weapons/weapon_base/init.lua:95