php - Getting error after adding additional data to display in order list(opencart 2.3)

one text

having a problem(error after adding additional data(need to display comment(using for track number) and commission(to see affiliate orders)) to be displayed in order list(Opencart 2.3) Was trying google, doing same-getting error, trying free modification(adding phone number to list) - getting error in log, getting nothing in order list.

Common task is to display in order list two more data from oc_order db - comment and commission

in admin\controller\sale\order.php was added code for comment and commission

foreach ($results as $result) {
            $data['orders'][] = array(
                'order_id'      => $result['order_id'],
                'customer'      => $result['customer'],
                'order_status'  => $result['order_status'] ? $result['order_status'] : $this->language->get('text_missing'),
                'total'         => $this->currency->format($result['total'], $result['currency_code'], $result['currency_value']),
                'date_added'    => date($this->language->get('date_format_short'), strtotime($result['date_added'])),
                'date_modified' => date($this->language->get('date_format_short'), strtotime($result['date_modified'])),
                'comment'      => $result['comment'],
                'commission'      => $result['commission'],
                'shipping_code' => $result['shipping_code'],
                'view'          => $this->url->link('sale/order/info', 'token=' . $this->session->data['token'] . '&order_id=' . $result['order_id'] . $url, true),
                'edit'          => $this->url->link('sale/order/edit', 'token=' . $this->session->data['token'] . '&order_id=' . $result['order_id'] . $url, true)
            );
        }

in admin\model\sale\order.php was added code o.comment, o.commission in db request

public function getOrders($data = array()) {
        $sql = "SELECT o.order_id, CONCAT(o.firstname, ' ', o.lastname) AS customer, (SELECT os.name FROM " . DB_PREFIX . "order_status os WHERE os.order_status_id = o.order_status_id AND os.language_id = '" . (int)$this->config->get('config_language_id') . "') AS order_status, o.shipping_code, o.total, o.currency_code, o.currency_value, o.date_added, o.date_modified, o.comment, o.commission FROM `" . DB_PREFIX . "order` o";

in admin\view\template\sale\order_list.tpl added code

<tbody>
                <?php if ($orders) { ?>
                <?php foreach ($orders as $order) { ?>
                <tr>
                  <td class="text-center"><?php if (in_array($order['order_id'], $selected)) { ?>
                    <input type="checkbox" name="selected[]" value="<?php echo $order['order_id']; ?>" checked="checked" />
                    <?php } else { ?>
                    <input type="checkbox" name="selected[]" value="<?php echo $order['order_id']; ?>" />
                    <?php } ?>
                    <input type="hidden" name="shipping_code[]" value="<?php echo $order['shipping_code']; ?>" /></td>
                  <td class="text-right"><?php echo $order['order_id']; ?></td>
                  <td class="text-left"><?php echo $order['customer']; ?></td>
                  <td class="text-left"><?php echo $order['order_status']; ?></td>
                  <td class="text-right"><?php echo $order['total']; ?></td>
                  <td class="text-left"><?php echo $order['date_added']; ?></td>
                  <td class="text-left"><?php echo $order['date_modified']; ?></td>
                  <td class="text-left"><?php echo $order['comment']; ?></td>
                  <td class="text-left"><?php echo $order['commission']; ?></td>
                  <td class="text-right"><a href="<?php echo $order['view']; ?>" data-toggle="tooltip" title="<?php echo $button_view; ?>" class="btn btn-info"><i class="fa fa-eye"></i></a> <a href="<?php echo $order['edit']; ?>" data-toggle="tooltip" title="<?php echo $button_edit; ?>" class="btn btn-primary"><i class="fa fa-pencil"></i></a></td>
                </tr>
                <?php } ?>
                <?php } else { ?>
                <tr>
                  <td class="text-center" colspan="8"><?php echo $text_no_results; ?></td>
                </tr>
                <?php } ?>
              </tbody>

after refreshing mod cash even with deleting cash getting same error

Notice: Undefined property: Proxy::getTotalOrdersBySearchExtended in public_html/vqmod/vqcache/vq2-system_storage_modification_admin_controller_sale_order.php on line 28

Have no more ideas what the hell wrong and where, maybe someone have solved similar problem, really need help.