How do I define the player on a click function inside a Local Script inside a ScreenGui?

This is the click function inside a local script inside a TextButton on a ScreenGui. It should clone the tool on the player's backpack (plr.Backpack). The problem is that the script won't find the player on Roblox Player, it works on the studio when I define plr as game.Players.LocalPlayer, but not on Roblox player when I test it there. Please help me.

function onClick()
	local plr = game.Players.LocalPlayer
	script.Parent.Parent.Visible = false
	script.Parent.Parent.Parent.Done.Visible = true
	tool1:Clone().Parent = plr.Backpack
	tool2:Clone().Parent = plr.Backpack
	tool3:Clone().Parent = plr.Backpack
	tool4:Clone().Parent = plr.Backpack
	tool5:Clone().Parent = plr.Backpack
end

script.Parent.MouseButton1Click:Connect(onClick)

All the variables are defined, the problem isn't there.