Odd error, can someone explain it to me?

I have a simple script here that deletes a model if "endGame" is in the Workspace. If it is not, then it waits 8 seconds before destroying it.

It runs through as it should perfectly, however I seem to be getting an error nonetheless.

My error:

23:35:19.585 - Workspace.Dog.Remove:4: attempt to index field 'Parent' (a nil value)

My script:

x = 0
while true do
	if game.Workspace:FindFirstChild("endGame") or x == 8 then
		script.Parent:Destroy()
	else
		wait(1)
		x = x + 1
	end
end

I would just like someone to explain to me why I am getting this error, and why it is still going through the script as though there was none.

Thanks!

Since you have it in a loop while true do it will try to keep deleting the Model, but after the first time its ran its gone so its nil meaning it doesn't exist so it errors.

Try Not using >while true do

Here is the script without while true do in it.

x = 0
    if game.Workspace:FindFirstChild("endGame") or x == 8 then
        script.Parent:Destroy()
    else
        wait(1)
        x = x + 1
    end

All you gotta do is put "break" after you delete the parent.