Why does my tool get deleted!? Maybe a ROBLOX bug?

local Tool = script.Parent
local Cooldown = false
local CDTime = 10

local Damage = 35



Tool.RemoteEvent.OnServerEvent:Connect(function(Player)

if Cooldown then return end



spawn(function()

Cooldown = true

wait(CDTime)

Cooldown = false

end)



local animationTrack =  Player.Character.Humanoid:LoadAnimation(Tool.Animation)

animationTrack:Play()



Tool.Sound:Play()

local Core = Tool.Core:Clone()

Core.Parent = Player.Character["Right Arm"]

local Weld = Instance.new("Weld",Player.Character["Right Arm"])

Weld.Part0 = Core

Weld.C1 = CFrame.new(0,-1.4,0)

Weld.Part1 = Player.Character["Right Arm"]



end)