Problems with SetPos(self:GetPos())

[Xopez]

Well,

I wanted to convert the Pokeballs SWEP from Sandbox to TTT, but i get some errors in the entity:

[ERROR] addons/ttt_pokeballs/lua/entities/pb_capture/init.lua:61: Tried to use a NULL entity!
  1. SetPos - [C]:-1
   2. unknown - addons/ttt_pokeballs/lua/entities/pb_capture/init.lua:61

The entity is following:

AddCSLuaFile("cl_init.lua")
AddCSLuaFile("shared.lua")
include('shared.lua')

util.AddNetworkString("SendSelf")

function ENT:PhysicsCollide(data, phys)
	self:EmitSound(self.BounceSnd)
	
	local impulse = -data.Speed * data.HitNormal * .4 + (data.OurOldVelocity * -.6)
	phys:ApplyForceCenter(impulse)
end

function ENT:Initialize()
	self:SetModel("models/weapons/w_pokeball_thrown.mdl")
	self:PhysicsInit(SOLID_CUSTOM)
	self:SetMoveType(MOVETYPE_VPHYSICS)
	self:SetSolid(SOLID_VPHYSICS)
	self:DrawShadow(false)
	self.timer = CurTime() + 20
end

function ENT:Think()
	if self.Entity:GetNWBool("HasHitPlayer", true) then
		self:DoEffects(self.ent)
	end
end

function ENT:DoEffects(ent)
	if type(self.ent) ~= "string" then
		self.Alpha = self.Alpha - 800*FrameTime()
		ent:SetRenderMode(RENDERMODE_TRANSALPHA)
		ent:SetColor(Color(255, 0, 0, self.Alpha)) 
		ent:SetModelScale(ent:GetModelScale()*0.5, 1)
	end
end
			
function ENT:Settype(type)
	self.type = type
end
	
function ENT:SetEnt(ent)
	if IsValid(ent) and ent:IsPlayer() then
		self.ent = ent
	end
end
	
function ENT:StartTouch(ent)
	if self:GetNWBool("HasHitPlayer") then
		return false 
	end

	if not self:GetNWBool("HasHitPlayer") and ent:GetClass() ~= "Player_barnacle" and ent:IsPlayer() and IsValid(ent) then
		self:SetNWBool("HasHitPlayer", true)
		self:EmitSound(self.CaptureSnd)
		if SERVER then
			local pball = "pokeball_base"
			local ent1 = ents.Create(pball)
			ent1.spawn = ent:GetClass()
			ent1.model = ent:GetModel()
			ent1:SetPos(self:GetPos())	
			ent1:Spawn()
			self:Remove()
		end
	elseif not self.Entity:GetNWBool("HasHitPlayer") then
		if SERVER then
			local pball2 = "pokeball_capture"
			local ent2 = ents.Create(pball2)
			--set spawn
			ent2:SetPos(self:GetPos())
			ent2:Spawn()
			self:Remove()
		end
	end
	
	if ent:IsPlayer() and IsValid(ent) and ent:GetClass() ~= "Player_barnacle" then
		self.ent = ent
		self:DoEffects(ent)
		self:DoColorstuff(ent)
	end
end

function ENT:DoColorstuff(ent) --Hacky way of doing this, but it looks cool so what the hell
	if IsValid(ent) and ent:IsPlayer() then
		ent:SetSolid(SOLID_NONE)

		timer.Simple(3.0, function() 
			ent:Remove()
		end)
	end
end

It's just the following line which makes problems:

ent1:SetPos(self:GetPos())

Hopefully someone can help me.

[c👌de_g🎷]

Check if the entity you created is valid after creating it