Welding parts to a Player when their character is added will not work?

Here your error is You only forgot to put spawn(function()) end) I don't know why, its really weird. But Nevermind you can also try this o.o.

ArmCover1 = game.ServerStorage.ArmCover1
ArmCover2 =  game.ServerStorage.ArmCover2
LegCover1 =  game.ServerStorage.LegCover1
LegCover2 =  game.ServerStorage.LegCover2
TorsoCover =  game.ServerStorage.TorsoCover
HeadCover =  game.ServerStorage.HeadCover

game.Players.PlayerAdded:connect(function(Plr)
    Plr.CharacterAdded:connect(function(Char)
	spawn(function()
	
	   local Copy = ArmCover1:Clone()
	  Copy.Parent = Char	
    	 Copy.Anchored = false
    	 local w = Instance.new("Weld",Copy)
    	 w.Part0 = Copy
    	 w.Part1 = Char["Left Arm"]
        w.C0 = CFrame.new(0 ,0 ,0)

        local Copy2 = ArmCover2:Clone()
        Copy2.Parent = Char
        Copy2.Anchored = false
        local w2 = Instance.new("Weld", Copy2)
        w2.Part0 = Copy2
        w2.Part1 = Char["Right Arm"]
        w2.C0 = CFrame.new(0 ,0 ,0)

        local Copy3 = LegCover1:Clone()
        Copy3.Parent = Char
        Copy3.Anchored = false
        local w3 = Instance.new("Weld", Copy3)
        w3.Part0 = Copy3
        w3.Part1 = Char["Left Leg"]
        w3.C0 = CFrame.new(0 ,0 ,0)

        local w4 = Instance.new("Weld", LegCover2)

        local w5 = Instance.new("Weld", TorsoCover)

        local w6 = Instance.new("Weld", HeadCover)
end)

    end)
end)