Solved IllegalArgumentException: Listener already listening

Hi, when i try to show inventory to player i get this error.
Code:

Code:

    private Inventory i;
    public void showPlayersKitInventory(Player p) {
        inv = Bukkit.createInventory(null, 27);
        inv.clear();
        if(plugin.getKits(p).contains("10")) {
            ItemStack item = new ItemStack(Material.NETHER_STAR);
            ItemMeta meta = item.getItemMeta();
            meta.setDisplayName("Aсассин.");
            item.setItemMeta(meta);
            inv.setItem(10, item);
        }
        if(plugin.getKits(p).contains("11")) {
            ItemStack item = new ItemStack(Material.NETHER_STAR);
            ItemMeta meta = item.getItemMeta();
            meta.setDisplayName("Вампир.");
            item.setItemMeta(meta);
            inv.setItem(11, item);
        }
        if(plugin.getKits(p).contains("12")) {
            ItemStack item = new ItemStack(Material.NETHER_STAR);
            ItemMeta meta = item.getItemMeta();
            meta.setDisplayName("Спидтестер.");
            item.setItemMeta(meta);
            inv.setItem(12, item);
        }
    inv.setItem(22, new ItemStack(Material.BARRIER));
        p.openInventory(inv);
        return;
    }

 

Are you opening this inventory when someone joins the server? If you are then schedule a task to make this code run maybe 10 ticks after they join

 

You should probably post the full class code, or at least the method and what event it is that you are using for good answers.

 

Show us your error in console

 

Thanks, solved.