Help on this script?

This script is meant to make a target box appear, then when you click the box stays at that position, the smoke is spawned and moved to the position, this should happen when you press Q . However it just doesn't seem to do anything, no obvious script errors in the debugger or Output either.

local tool = script.Parent
	local spawned = false
	local player = game.Players.LocalPlayer
	local mouse = player:GetMouse()
	local a = nil
	-- I added some local variables so they're easier to call from within the script
	 
	mouse.KeyDown:connect(function(key)
	    if string.lower(key) ==  "q" then
	        if player.leaderstats.Lvl.Value>=2 and player.Mana.Value>=20 then -- Changed to new variables
	            if spawned then return end
	            local target = mouse.Target
	            a = game.Lighting.union:Clone()
	            a.Parent = Workspace
	            a.Size = Vector3.new(3,3,3)
	            a.Anchored = true
	            a.CanCollide = False
	            spawned = true
	            while spawned do
	                wait()
	                a.CFrame = CFrame.new(Vector3.new(tool.Parent.Humanoid.TargetPoint.X,0,tool.Parent.Humanoid.TargetPoint.Z))
	            end
	        end -- This 'end' was missing
	    end
	end)
	 
	function onButton1Down(mouse)
	    a.BrickColor = BrickColor.new(1022) -- Updated
	    a.Anchored = false
	    local smoke = game.lighting.Smoke:clone()
	    smoke.parent = Workspace
	    game.Workspace.smoke.CFrame = game.Workspace.union.CFrame+ Vector3.new(0, 4, 0)
	    wait (5)
	    a:remove()
	    smoke:remove()
	end
	-- Here was an extra function onEquipped(mouse) that didn't end
	function onEquipped(mouse)
	      mouse.Button1Down:connect(function () onButton1Down(mouse) end)
	end
	 
	 
	tool.Equipped:connect(onEquipped(mouse))

Just so you know, I have been helped with a script that has inserted two IntValues into the player called Mana, and MAXMana, for your reference it can be found here: https://scriptinghelpers.org/questions/10533/help-on-this-script-with-intvalues

I agree with Damagex443 Use the "Print Function" to check where your script doesn't respond anymore.