class ModelExtensionTotalPaycharge extends Model {
    public function getTotal($total) {
        if ($this->config->get('paycharge_status') && isset($this->session->data['payment_method']['code']) && $this->cart->getSubTotal()) {
            $totalPaycharge = 0; // Создаем переменную для хранения суммы наценок

            foreach ($this->config->get('paycharge') as $paycharge) {
                if ($paycharge['payment_method'] == $this->session->data['payment_method']['code']) {
                    $total['totals'][] = array(
                        'code'       => 'paycharge',
                        'title'      => $paycharge['description'][$this->config->get('config_language_id')]['name'] . ' (' . $paycharge['valuep'] . '%' . ')',
                        'value'      => ($total['total'] / 100 * $paycharge['valuep']),
                        'sort_order' => $this->config->get('paycharge_sort_order')
                    );

                    $totalPaycharge += $total['total'] / 100 * $paycharge['valuep']; // Накопление суммы наценок
                }
            }

            // Округление суммы наценок и добавление к общей сумме заказа
            $total['total'] += round($totalPaycharge);
        }
    }
}<b>Notice</b>:  Undefined property: Proxy::getTotal in <b>/var/www/u0920864/data/www/tortdeko.ru/system/storage/modification/system/engine/action.php</b> on line <b>51</b>