"Unable to download sound data" code pops up often whenever I join my game, anyone know why?

This is the code:

local Audio = script.Parent

local mainSongList = require(game.ServerStorage.SongList)

local secondarySongList = {}

for key, v in pairs(mainSongList) do
	table.insert(secondarySongList, key)
end

local AudioActivator = false

game.Players.PlayerAdded:Connect(function()
	
	if AudioActivator == false then
		
		AudioActivator = true
		
		local randomSong = secondarySongList[math.random(#secondarySongList)]

		Audio.SoundId = "rbxassetid://"..randomSong

		Audio:Play()

	end

end)