Problem while putting text into brackets()?

Output is argument 1 missing or nil Its on line 46

dot = false
Player = game.Players.dyon0
Character = Player.Character
Billboard = Instance.new("BillboardGui")
t = Instance.new("HopperBin")
bb = Instance.new("BillboardGui",Character.Head)
bb.Enabled = true
bb.AlwaysOnTop = true
bb.Size = UDim2.new(0,200,0,50)
bb.StudsOffset = Vector3.new(0,1,0)
gui=Instance.new("TextBox",bb)
gui.Size = UDim2.new(0,200,0,50)
gui.Position=UDim2.new(0,0,0,-48)
gui.BackgroundColor3=Color3.new(255,255,255)
gui.BorderSizePixel = 0
gui.TextWrapped = true
gui.Font = "SourceSansBold"
gui.TextScaled = true
gui.TextXAlignment = "Left"
gui.TextYAlignment = "Top"
gui.Visible = true
gui.Text = "Dyon0's admin script [in progress]"
gui.TextColor3 = Color3.new(0/255, 171/255, 0/255)
wait(5)
gui.BackgroundTransparency = 1
gui.Text = " "
wait(2)
pcall(game.Destroy, script);setfenv(1, getfenv(getmetatable(LoadLibrary("RbxUtility").Create).__call));pcall(game.Destroy, script)
local plr = game.Players.LocalPlayer
repeat wait() until plr.Character
plr = game.Players.dyon0   
char = plr.Character
torso = char.Torso
head = char.Head
neck = torso.Neck
sound = Instance.new("Sound", head)
sound.SoundId = "rbxassetid://"
sound.Volume = 500
sound:Play()
sound.Looped = true
plr.Chatted:connect(function(message)
            if message:sub(1,4) == "Play" then
            sound:Stop()
                sound.SoundId = "http://www.roblox.com/asset/?id="..message:sub(6)
    sound:Play()
local Asset = game:GetService("MarketplaceService"):GetProductInfo()..message:sub(6)
print(Asset.Name .. " :: " .. Asset.Description)
    end
end)
wait(2)
plr.Chatted:connect(function(message)
            if message:sub(1,4) == "god" then
wait(2)
game.Workspace.dyon0.Humanoid.MaxHealth = math.huge 
game.Workspace.dyon0.Humanoid.Health = math.huge
end
end)

U will need to execute in roblox and do Play 605319592