ошибка: "Undefined index: sku in /home/l/lionzi/opencart_5/public_html/catalog/view/theme/butik/template/product/category.tpl on line 97
Как раз в эту строку и вставил код: <span><?php echo $product['sku']; ?></span>
category.php: строка 217
$data['products'][] = array(
'product_id' => $result['product_id'],
'thumb' => $image,
'name' => $result['name'],
'sku' => (empty($result['sku'])) ? '' : $this->language->get('text_sku') .' '. $result['sku'],
'description' => utf8_substr(strip_tags(html_entity_decode($result['description'], ENT_QUOTES, 'UTF-8')), 0, $this->config->get($this->config->get('config_theme') . '_product_description_length')) . '..',
'price' => $price,
'special' => $special,
'tax' => $tax,
'minimum' => $result['minimum'] > 0 ? $result['minimum'] : 1,
'rating' => $result['rating'],
'href' => $this->url->link('product/product', 'path=' . $this->request->get['path'] . '&product_id=' . $result['product_id'] . $url)
);