/Java/Java.lang.IllegalStateException: Not scheduled yet

Java.lang.IllegalStateException: Not scheduled yet

new BukkitRunnable() {
	int timer = 10;

	@Override
	public void run() {
		if (timer == 0) cancel();
        else Bukkit.broadcastMessage("Starting in: " + timer--);
	}

	@Override
	public synchronized void cancel() throws IllegalStateException {
        Bukkit.broadcastMessage("Action!");
		super.cancel();
	}
}.runTaskTimer(Main.main(), 0L, 20L); // repeat every second

Source: bukkit.org

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