How to fix Attempt to index nil with error in this script??

For some reason in the script, it says Attempt to index nil with 'glow' I have tried using if statements to counter this but if statements don't work.

local ReplicatedStorage = game:GetService("ReplicatedStorage")
local changer = ReplicatedStorage:WaitForChild("ColorChanger")
print("Remote event obtained")

workspace.DescendantAdded:Wait("Star")

changer.OnServerEvent:Connect(function(player)
	local cloneStar = game.Workspace:FindFirstChild("Star")
	print("Start")
	
	
	local Colors = {BrickColor.new("Pastel yellow").Color, BrickColor.new("Cool yellow").Color, BrickColor.new("Daisy orange").Color, BrickColor.new("Bright yellow").Color, BrickColor.new("New Yeller").Color, BrickColor.new("Deep orange").Color} 
	
	
	local TweenService = game:GetService("TweenService")
	
	
	local function ColorChange(ColorToChangeTo)
		print("Function on")
		
			
		local Union = cloneStar.glow
			
		local tweenInfoColor = TweenInfo.new(1,Enum.EasingStyle.Linear, Enum.EasingDirection.InOut, 0, false, 0)
		local ColorProperty = {}
		
		ColorProperty.Color = ColorToChangeTo
		
		local tween = TweenService:Create(Union,tweenInfoColor,ColorProperty)
		tween:Play()
		print("Tween playing")
		
					
		wait(1)
	
	end
	
	
	while true do	
		
		for i,v in ipairs(Colors) do
													
			ColorChange(v)
			
		end		
							
	end
			
end)

Figured it out, I just used a local script:

local ReplicatedStorage = game:GetService("ReplicatedStorage")
local arrow = ReplicatedStorage:WaitForChild("Arrow")


arrow.OnClientEvent:Connect(function()
	local cloneStar = workspace:FindFirstChild("Star")
	print("Obtained")
	
	if cloneStar == nil or cloneStar["glow"] == nil then			
		error("Star Cannot be found in ["..workspace:GetFullName().."]!! \n stopping script!!")
	end
	
	
	local Colors = {BrickColor.new("Pastel yellow").Color, BrickColor.new("Cool yellow").Color, BrickColor.new("Daisy orange").Color, BrickColor.new("Bright yellow").Color, BrickColor.new("New Yeller").Color, BrickColor.new("Deep orange").Color} 

	
	local TweenService = game:GetService("TweenService")

	
	local function ColorChange(ColorToChangeTo)
		if cloneStar ~= nil or cloneStar["glow"] ~= nil then 		
			print("Function on")
			
			local Union = cloneStar["glow"]
				
			local tweenInfoColor = TweenInfo.new(1,Enum.EasingStyle.Linear, Enum.EasingDirection.InOut, 0, false, 0)
			local ColorProperty = {}

			ColorProperty.Color = ColorToChangeTo

			local tween = TweenService:Create(Union,tweenInfoColor,ColorProperty)		
			tween:Play()	
			print("Tween playing")	
		else					
			warn("Warning Cannot Find cloneStar in "..tostring(workspace).." Please check your code and try again!")
		end
	
		wait(1)
		
	end
	
	
	while true do
		
		for i,v in ipairs(Colors) do
					
			ColorChange(v)
							
		end 		
	
	end
	
end)