@EventHandler
    public void onPlayerJoin(PlayerJoinEvent event) {
        int playerProtocolVersion = protocolManager.getProtocolVersion(event.getPlayer());
        System.out.println(playerProtocolVersion);

        if (playerProtocolVersion < MIN_PROTOCOL_VERSION) {
            event.getPlayer().sendMessage(ChatColor.RED + "Warning: You are using an outdated version of Minecraft. Please update to 1.20.6 or higher for the best experience.");
            event.getPlayer().sendMessage(ChatColor.RED + "Shops will not work properly. Click on the empty box to receive the shop item if it doesn't display!");
        }
    }