Помогите с ошибкой

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    // Tax
    $this->registry->set('tax', new Cart\Tax($this->registry));
    if (isset($this->session->data['shipping_address'])) {
        $this->tax->setShippingAddress($this->session->data['shipping_address']['country_id'], $this->session->data['shipping_address']['zone_id']);
    } elseif ($this->config->get('config_tax_default') == 'shipping') {
        $this->tax->setShippingAddress($this->config->get('config_country_id'), $this->config->get('config_zone_id'));
    }
    if (isset($this->session->data['payment_address'])) {
        $this->tax->setPaymentAddress($this->session->data['payment_address']['country_id'], $this->session->data['payment_address']['zone_id']);
    } elseif ($this->config->get('config_tax_default') == 'payment') {
        $this->tax->setPaymentAddress($this->config->get('config_country_id'), $this->config->get('config_zone_id'));
    }
    $this->tax->setStoreAddress($this->config->get('config_country_id'), $this->config->get('config_zone_id'));