My error code is csg -21.

my code;

client localscript:

local player = game.Players.LocalPlayer
local mouse = player:GetMouse()

local createpart = game.ReplicatedStorage.createpart

local debris = game:GetService("Debris")

mouse.Button1Down:Connect(function()
	local Unitray = mouse.UnitRay
	local beam = Instance.new("Part",workspace) 
	local x = tonumber(mouse.Hit.X + "0") -- made it so its editable
	local y = tonumber(mouse.Hit.Y + "0")
	local z = tonumber(mouse.Hit.Z + "0")
	beam.BrickColor = BrickColor.new("Toothpaste")
	beam.FormFactor = "Custom"
	beam.Material = "Neon"
	beam.Transparency = 0.6
	beam.Anchored = true
	beam.Locked = true
	beam.CanCollide = false
	local distance = (mouse.Origin.p - mouse.Hit.p).magnitude
	beam.Size = Vector3.new(0.2,0.2,distance)
	beam.CFrame = CFrame.new(mouse.Origin.p, mouse.Hit.p) * CFrame.new(0, 0, -distance / 2)
	createpart:FireServer(Vector3.new(math.floor(x+.5),math.floor(y+.5),math.floor(z+.5)), math.random(2,10))
	debris:AddItem(beam,2)
end)

csg handler: 

local destructable = workspace.Destructable
local tabl = {}

local function getcheckingparts()
	for i,taba in pairs(tabl) do
		table.remove(tabl,i)
	end
	for i,v in pairs(workspace:GetChildren()) do
		if v.Name == "checking" then
			table.create(#tabl,v)
		end
	end
end

while task.wait() do
	getcheckingparts()
	if workspace:FindFirstChild("checking") then
		local success, error, unionpart = pcall(function()
			return destructable:SubtractAsync(tabl)
		end)
	
		if success and unionpart then
			print("it works")
			unionpart.Position = destructable.Position
			unionpart.Anchored = true
			unionpart.Parent = game.Workspace
			destructable:Destroy()
			for i,v in pairs(tabl) do
				v:Destroy()
			end
			print("sucessfully did it")
		else
			print(error)
		end
	end	
end

create part:

local createpart = game.ReplicatedStorage.createpart

local debris = game:GetService("Debris")

createpart.OnServerEvent:Connect(function(client,position,number)
	repeat 
		number = number - 1
		local hitthingy = Instance.new("Part",workspace)
		hitthingy.Name = "checking"
		hitthingy.Anchored = true
		hitthingy.CanCollide = false
		hitthingy.Size = Vector3.new(5,5,5)
		hitthingy.Orientation = Vector3.new(math.random(-180,180),math.random(-180,180),math.random(-180,180))
		print(position)
		hitthingy.Position = position
		debris:AddItem(hitthingy,2)
	until number == 0
end)

heres where i put my scripts; https://ibb.co/6sC67ZZ

sorry it isnt clean. this is my first post. that is for questioning

AnonymousEdited