First table.insert value always goes nil! Any idea?

Hello everyone! I am trying to make a table (put into a modulescript in ReplicatedFirst) to hold a limited amount of items and, when I put a limit to the amount of items through a #table >= 3, it counts as if there were 4! Like as if the first click I do doesn't exist. Any help?

LocalScript to create the item and send it through RemoteEvent

local creating = script.Parent.Parent.Creating

script.Parent.MouseButton1Down:Connect(function()
	local NEWvirus = math.random(1,3)
	local virus = ""
		
	if NEWvirus == 1 then
		virus = "TrojanVirusLVL1"
	end
	if NEWvirus == 2 then
		virus = "TrojanVirusLVL2"
	end
	if NEWvirus == 3 then
	    virus = "TrojanVirusLVL3"
	end
		
	game.ReplicatedStorage.Virus.AddVirus:FireServer(virus)
end)

ServerScript in ServerScriptService to receive the item and put it into the table

game.ReplicatedStorage.Virus.AddVirus.OnServerEvent:Connect(function(plr, virus)
	local virusTable = require(game.ReplicatedFirst.CreatedViruses)
	
	table.insert(virusTable, virus)
end)

ServerScript in the same place as the LocalScript (StarterGUI) to check the amount and limit it

local creating = script.Parent.Parent.Creating

game.ReplicatedStorage.Virus.AddVirus.OnServerEvent:Connect(function()
	local crVirus = require(game.ReplicatedFirst.CreatedViruses)
	
	if #crVirus ~= 3 then
		print(crVirus[1], crVirus[2], crVirus[3])
	else
		print(#crVirus)
		script.Parent.Create.Disabled = true
		script.Parent.Parent.Creating.Visible = true		
		script.Parent.Parent.Creating.Text = "You reached the maximum amount of virus! Use or discard one then try again!"
	end
end)

As I told you, the first time I click the button and the RemoteEvent fires the line

	if #crVirus ~= 3 then
		print(crVirus[1], crVirus[2], crVirus[3])
	else

prints me out "nil nil nil" then it proceeds on printing the rest as if nothing's happened, like the first click never happened. Please help!

you need to Return the Table like this

local Module = {}

function Module.GetTable()
       return Module --now you can use it
end
function Module.AddStuffToTable(Stuff)
       table.insert(Module,Stuff)
end
return Module

usage example

local Module = require(game.replicatedstorage.Module)
Module.AddStuffToTable("EXE")
wait(5)
print(Module.GetTable()[1]) --It prints EXE