[ANSWERED] attempt to index local "player" (a nil value)?

I am making a GUI button where if you click it, you will be prompted with a gamepass. If you own it or buy it, it will show a new gui where you can choose a level (my game has free levels and paid access levels).

However, when I create the function, I get:

attempt to index local 'player' (a nil value)

Here is the code:

local debounce = false
local Id = 7985691 --My gamepass id

function onButtonClicked(player)
	if debounce == false then
	debounce = true
	if game:GetService("MarketplaceService"):UserOwnsGamePassAsync(player.UserId, 7985691) then
script.Parent.Click:Play()
game.Workspace.Sound:Stop()
game.Workspace.Sound2:Play()
script.Parent.Parent.Parent.PremLevelsGUI.Visible = true
script.Parent.Parent.Parent.PremInfo.Visible = true
script.Parent.Visible = false
script.Parent.Parent.House.Visible = false
script.Parent.Parent.HTP.Visible = false
script.Parent.Parent.Parent.Back.Visible = true
debounce = false
	else
		game:GetService("MarketplaceService"):PromptGamePassPurchase(player, 7985691)
	debounce = false
	end
end
	end


script.Parent.MouseButton1Click:connect(onButtonClicked)

Any help is much appreciated,thanks!