can you help me fix error:argument missing or nil in a gamepass script?

If you see more errors please fix them but if not dont go out of your way to do so

local gamepassid_ = 8172261


game.Players.PlayerAdded:Connect(function(player)
	if game:GetService("MarketplaceService"):UserOwnsGamePassAsync(player.userId, gamepassid) then
		if player.Backpack:FindFirstChild("GravityCoil") == nil and player.Character:FindFirstChild("GravityCoil") == nil then
			game.ServerStorage:FindFirstChild("GravityCoil"):Clone()
			b.Parent = player.Backpack 
		end
	end
end)

error is on:

if game:GetService("MarketplaceService"):UserOwnsGamePassAsync(player.userId, gamepassid) then