This is my script, why it can't clone a tool from lightning?

local ReplicatedStorage = game:GetService("ReplicatedStorage")

local cloneEvent = game.ReplicatedStorage.cloneEvent

local function cloneTool(Player,Tool)
    script.Weapon.Value = Tool
    local clone = game.Lighting:FindFirstChild(script.Weapon.Value):Clone()
    clone.Parent = game.Players:FindFirstChild(Player).Backpack
end

cloneEvent.OnServerEvent:Connect(cloneTool)

This suppose to copy a weapon with a lauched name from lightning

but it give this error: Workspace.Cloner:7: attempt to index nil with 'Clone'