pending error

[Fernando-Agrolab]

 

I'm having a problem with prestashop tab client (pending) pending when I click the following error appears 

 

[PrestaShopException]

object Order can't be loaded
at line 146 in file controllers/admin/AdminOutstandingController.php

140.         $order_invoice = new OrderInvoice($id_invoice);
141.         if (!Validate::isLoadedObject($order_invoice))
142.             throw new PrestaShopException('object OrderInvoice can\'t be loaded');
143.         $order = new Order($order_invoice->id_order);
144.         if (!Validate::isLoadedObject($order))
145.             throw new PrestaShopException('object Order can\'t be loaded');
146.         $customer = new Customer((int)$order->id_customer);
147.         if (!Validate::isLoadedObject($order_invoice))
148.             throw new PrestaShopException('object Customer can\'t be loaded');
149.
150.         return '<b>'.$customer->getOutstanding().'</b>';

• AdminOutstandingControllerCore->printOutstandingCalculation - [line 297 - classes/helper/HelperList.php] - [2 Arguments]
• HelperListCore->displayListContent - [line 146 - classes/helper/HelperList.php] - [2 Arguments]
• HelperListCore->generateList - [line 1630 - classes/controller/AdminController.php] - [0 Argument]
• AdminControllerCore->renderList - [line 1502 - classes/controller/AdminController.php] - [2 Arguments]
• AdminControllerCore->initContent - [line 167 - classes/controller/Controller.php] - [0 Argument]
• ControllerCore->run - [line 348 - classes/Dispatcher.php] - [0 Argument]
• DispatcherCore->dispatch - [line 53 - painel/index.php] - [0 Argument]