how do i fix "attempt to index local 'player' (a nil value)"?

ok so everytime i go in game to test, it constantly says attempt to index and all that, never works - it's for a shop GUI that gives you a gun when clicked

script.Parent.MouseButton1Click:Connect(function()
    
    local RS = game:GetService("ReplicatedStorage")
    
    local item = RS:WaitForChild("GlockDrum")
    
    local player = game.Players.LocalPlayer
    
    local cloned = item:Clone()
    
    cloned.Parent = player.Backpack
    
    end)

If this is a script then localplayer will not work. How you could fix this is by passing a plr argument in the Mouse click event "script.Parent.MouseButton1Click:Connect(function(player)" and then removing the local player variable.

Hope this helps!