fix bug

api/application/models/Privilnode_model.php

@@ -1,6 +1,8 @@
-<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+<?php 
+if (!defined('BASEPATH'))exit('No direct script access allowed');
+include_once(FCPATH . 'application/models/Base_model.php');
 
-class Privilnode_model extends CI_Model{
+class Privilnode_model extends Base_model{
 
 	private $table = 'privilnode';