ModuleScript, attempt to call a nil value? (help!)

Hey guys,

I'm making a card game on Roblox.

Currently, I have 2 modules and one server script.

ModuleScripts:

Deck

Deck = {}
Deck.__index = Deck

	function Deck.new(suit,rank)
		local newDeck ={}
		setmetatable(newDeck, Deck)
		
		newDeck.Suit = suit
		newDeck.Rank = rank
		
		return newDeck
	end

return Deck

Visualize

local Deck = require(game.ServerScriptService.Modules.Deck)

local Vis = {}
Vis.__index = Vis

	function Show()
		print((Deck.Rank).." of "..(Deck.Suit))
	end

return Vis

Server:

Deal

local Deck = require(game.ServerScriptService.Modules.Deck)
local Vis = require(game.ServerScriptService.Modules.Visualize)

newDeck = Deck.new("Diamonds",math.random(2,14))
Vis.Show()

All I'm trying to do is print the values of the new deck (Vis) created in (Deck). this works if I do everything in the server script, for some reason I'm getting the following error:

ServerScriptService.Deal:5: attempt to call a nil value

I feel like there's something super obvious I'm missing but I can't seem to put my finger on it..

Thanks in advance!