Label is not showing up [FE]!?

Well, the label is not showing when the button is pressed! Script:

-- VARIABLES
local Player = game:GetService("Players").LocalPlayer
local Storage = game:GetService("ReplicatedStorage"):FindFirstChild("Storage")
local Swords = Storage:WaitForChild("Swords")
local Database = Player:WaitForChild("Database")
local ValueFolder = Database:FindFirstChild("Value_Inv")
local MeltingLabel = script.Parent.Parent.Parent.Parent:FindFirstChild("MeltingInfo")
local meltingeffect = script.Parent.Parent.Parent.Parent:FindFirstChild("Melting")
-- CODE

script.Parent.MouseButton1Click:Connect(function()
    local debounce = false
    if ValueFolder.IronOre_Value.Value >= 1 then
        if not debounce then
            debounce = true

        ValueFolder.IronOre_Value.Value = ValueFolder.IronOre_Value.Value - 1
        wait()
        MeltingLabel.Visible = true
        meltingeffect:Play()
        wait(3)
        meltingeffect:Stop()
        MeltingLabel.Visible = false
        ValueFolder.IronIngot_Value.Value = ValueFolder.IronIngot_Value.Value + 1
        end

    else
        -- Code here

    end
    wait(1)
    debounce = false
end)

Well, the output is *attempt to index upvalue 'MeltingLabel" (a nil value)! Line 19' *

Explorer ->> https://imgur.com/a/CsCIp0N