attempt to call method 'kill' (a nil value)

[yanny]

My first time making a super basic melee weapon and can't kill anything with it.

if ( IsValid( ent ) && ( ent:IsPlayer() || ent:IsNPC() ) ) then

self.Weapon:SendWeaponAnim( ACT_VM_HITCENTER )
ply:SetAnimation( PLAYER_ATTACK1 )

ply:EmitSound( HitSound )
ent:SetHealth( ent:Health() - 50)
if( ent:Health() < 1 ) then
ent:Kill()
end

[CODE BLUE]

Are you running this on the client or server? Also putting this in a shared file without any filters for client or server could also cause this as the Kill function is not defined on the client, only the server.

[Alexwall]

It also could be that the Kill method only works on players and not NPCs