What I want to happen is: When you touch the block, the block will disappear and an unanchored block will appear in its place and disappear after 5 seconds. The game output box doesn't say anything if I touch the block. The "Go to script error" button at the top also doesn't say anything. 

local part = script.Parent
part.Touched:connect(function()
	game:GetService('Debris'):AddItem(Workspace.TestingTree.Part, 5)
	part.Visible = false
end)
wait(5)
part.Visible = true
Anonymous