Solved Getting A firework effect on the player

So I saw a post like this and followed what fireblast709 said and still can not get it to work!
Here is the code and keeps saying can not spawn this entity over and over again when I move.
Here is the event code:

Code:

    @EventHandler(priority = EventPriority.MONITOR)   
    public void onPlayerMove(PlayerMoveEvent event)
    {
        Player p = event.getPlayer();
        if (!p.isOp())
        {
            return;
        }
        if (!TestCommand.testing.contains(p.getName()))
        {
            return;
        }
        Location loc = p.getLocation();
        Firework firework = p.getWorld().spawn(loc, Firework.class);
        FireworkMeta data = (FireworkMeta) firework.getFireworkMeta();
        data.addEffects(FireworkEffect.builder().withColor(Color.GREEN).with(Type.BALL_LARGE).build());
        data.setPower(2);
        firework.setFireworkMeta(data);
        return;
    }

If it is a simple mistake I am going to face palm since I have been tired from making a custom ban plugin all night.
Thank you for any help!

 

Update your Craftbukkit

 

Alright thank you will try!

fireblast709
Thank you! This was the problem!

EDIT by Moderator: merged posts, please use the edit button instead of double posting.