Opencart自定义管理区域->；无效的令牌会话

我收到的上一个问题的答案（Opencart自定义管理区域-只显示表的第一条记录的查询）非常有用，所以我决定回来就同一项目寻求更多建议。

每当我重定向到自定义页面/控制器（即/admin/index.php？route=custom/verkopen，来自/admin/inindex.php？route=custom/hoofdpagina）时，由于令牌会话无效，我会被要求再次登录。我试着在谷歌上搜索并自己找出答案，但我找到的解决方案要么不完整，要么对我不起作用。

这又是我的代码：

主控制器：

<?php
class Controllercustomhoofdpagina extends Controller{ 
        public function index() {
    $template="custom/hoofdpagina.tpl"; // .tpl location and file
    $this->load->model('custom/hoofdpagina');
    $this->template = ''.$template.'';
    $this->response->setOutput($this->render());
}
}
?>

控制器子页面：

   <?php 
class Controllercustomverkopen extends Controller{

    public function Index(){
    $template="custom/verkopen.tpl"; // .tpl location and file
    $this->load->model('custom/hoofdpagina');
    $this->data['verkopen'] =                                             $this->model_custom_hoofdpagina->verkopenLijst();
     $this->template = ''.$template.'';
     $this->response->setOutput($this->render());
    }
    public function verkopenTonen(){
        $this->load->model('custom/hoofdpagina');
        $verkopen = $this->model_custom_hoofdpagina->verkopenLijst();
        return $verkopen;
    }
}


?>

型号：

<?php
class Modelcustomhoofdpagina extends Model {
public function verkopenLijst() {
  $query = $this->db->query("SELECT * FROM `shop_order_product`");
    if($query->num_rows > 0){
    $verkopen = array();
       foreach($query->rows as $result){
            $verkopen[] = array(
                'name' => $result['name'],
                'model'      => $result['model'],
                'quantity'      => $result['quantity'],
                'price'     => $result['price'],
                'total'     => $result['total'],
                'tax'     => $result['tax']);
        }
        return $verkopen;
    }
}
public function klantenLijst() {

    $query = $this->db->query("SELECT * FROM `shop_customer`");
    if($query->num_rows > 0){
    $klanten = array();
       foreach($query->rows as $result){
            $klanten[] = array(
                'first name' => $result['firstname'],
                'last name'      => $result['lastname'],
                'email'      => $result['email'],
                'telephone'     => $result['telephone'],
                'date added'     => $result['date_added']
                );
        }
        return $klanten;
    }
}
public function productenLijst() {

    $query = $this->db->query("SELECT * FROM `shop_product_description`");
    if($query->num_rows > 0){
    $producten = array();
       foreach($query->rows as $result){
            $producten[] = array(
                'name' => $result['name'],
                'description'      => $result['description']
                );
        }
        return $producten;
    }
}
public function productenAanpassen() {
   $this->request->post['name'];
   $this->request->post['text'];
   $this->request->post['description'];
   $this->request->post['price'];

}
}
?>

主视图：

  <div class="container-fluid">
<div class = "row">
  <div class = "col-xs-12">
    <div class = "head font-effect-neon"> Admin Area </div>
  </div>
</div>
<div class="row">
  <div class="col-xs-3">
    <div class="button">
      <a href="http://maureen.codehub.be/ew/admin/index.php?route=custom/verkopen"><button class = "buttonverkopen font-effect-neon" name = "verkopen"> Verkopen </button></a>
    </div>
  </div>
  <div class="col-xs-3">
    <div class="button">
      <a href="http://maureen.codehub.be/ew/admin/index.php?route=custom/klanten"><button class = "buttonklanten font-effect-neon" name = "klanten"> Klanten </button></a>
    </div>
  </div>
  <div class="col-xs-3">
    <div class="button">
      <a href="http://maureen.codehub.be/ew/admin/index.php?route=custom/producten"><button class = "buttonproducten font-effect-neon" name = "producten"> Producten </button></a>
    </div>
  </div>
  <div class="col-xs-3">
    <div class="button">
      <a href="http://maureen.codehub.be/ew/admin/index.php?route=custom/aanpassen"><button class = "buttonaanpassen font-effect-neon" name = "aanpassen"> Aanpassen </button></a>
    </div>
  </div>
</div>

<div class = "row">
  <div class = "col-xs-4">
    <div class = "credits font-effect-neon"> Eindwerk </div>
  </div>
  <div class = "col-xs-4">
    <div class = "credits font-effect-neon"> VDO Webontwikkeling 2014-2015 </div>
  </div>
  <div class = "col-xs-4">
    <div class = "credits font-effect-neon"><span class="glyphicon glyphicon-copyright-mark"> Maureen van Eede </span></div>
  </div>

查看子页面：

<div class="container-fluid">
<div class = "row">
  <div class = "col-xs-12">
    <div class = "head font-effect-neon"> Verkopen </div>
  </div>
</div>
<div class="row">
  <div class="col-xs-12">
    <div class = "php1"> <pre>
      <?php
      foreach($verkopen as $verkoop){
          echo '<p>';
          echo 'Product:'. $verkoop['name'].'<br />';
          echo 'Prijs:'. $verkoop['price'];
          echo '</p>';
        }
        ?>
      </pre>
    </div>
  </div>
</div>

如有任何帮助，我们将不胜感激。