Why is this function printing "Invalid parameter" when the parameter I give is a boolean?

I was trying to make a module script that I could use to control an intermission text bar.

This code is intended to change the visibility of the text bar:

function module.visible(bool)
	local intermissionGUI = script.Parent
	local intermissionText = intermissionGUI:WaitForChild("TextLabel")
	
	if bool == true then
		intermissionText.Visible = true
	elseif bool == false then
		intermissionText.Visibile = false
	else
		warn("Invalid parameter!")
	end
end

I tried running the visible() function using the following script:

local gui = require(game.ServerStorage:WaitForChild("InterGUI"))

gui:visible(false)

But the ModuleScript just prints out "Invalid parameter!"

Any help will be appreciated!