Why is the asset not loading?

With my gif I've noticed there was a problem. Some frames are missing. I thought because it isn't loaded so I've used Preload.

frames = {230020795,230021055,230022130,230023083,230023938,230024173,230024269,230024743,230025991,230026076,230028638,230028781,230028829,230028881,230028915,230054690,230054720,230054806,230054865,230054930,230055354,230055573,230055616,230055672,230055788}
local i = 1

game:GetService("RunService").Heartbeat:connect(function()
	i = i+1
	if i > #frames then
		i = 1
	end
	game:GetService("ContentProvider"):Preload("http://www.roblox.com/asset/?id="..frames[i]-1)
	script.Parent.Image = "http://www.roblox.com/asset/?id="..(frames[i]-1)
end)

I noticed this in my output:

08:29:28.087 - Content failed for http://www.roblox.com/asset/?id=230023937 because HTTP 409 (User is not authorized to access Asset.) 08:29:28.088 - Content failed because HTTP 409 (User is not authorized to access Asset.)

Thanks for helping!

EDIT: This isn't a duplicate. It's the same script but not a duplicate.

That means that you cannot access the assets that you're trying to use; someone else owns them and does not allow them to be used publicly.