Why wont this script find a ModuleScript named shop?

Im confused.

There is a module script in server script service. Its name is shop.

My (local) script:

local ServerScriptService = game:GetService("ServerScriptService")
local Module = require(ServerScriptService.Shop) --The problem.

function onClick()
    Module:PurchaseAnthem(game.Players.LocalPlayer, script.Parent.Parent.Id.Value, script.Parent.Parent.Price.Value)
end

script.Parent.MouseButton1Click:Connect(onClick)

When I try to get the module it doesn't work and I get an error in the output: "Shop is not a valid member of ServerScriptService "ServerScriptService"