why is the parent feature locked?

local Dweapon = game:GetService("ReplicatedStorage").Dagger
local Dclone = Dweapon:Clone()
local TSweapon = game:GetService("ReplicatedStorage").TrainingSword
local TSclone = TSweapon:Clone()
			




game.Players.PlayerAdded:connect(function(player)
	player.CharacterAdded:connect(function(character)
local D = player:WaitForChild("StarterGear"):FindFirstChild("Dagger")	
local TS = player:WaitForChild("StarterGear"):FindFirstChild("TrainingSword")
	if D then 
		D:Destroy()
		wait(10)
		Dclone.Parent = player.StarterGear
	end
	if TS then
		TS:Destroy()
		wait(10)
		TSclone.Parent = player.StarterGear
	end
end)
end)

Error The Parent property of Dagger is locked, current parent: NULL, new parent StarterGear