CMS Opencart. Fatal error: Uncaught Twig\Error\SyntaxError: Unexpected token"name" of value "quick_order"

Fatal error: Uncaught Twig\Error\SyntaxError: Unexpected token "name" of value "quick_order" ("end of print statement" expected). in /home/*******/www/catalog/view/theme/unishop2/template/product/product.twig:144 Stack trace: #0 /home/*******/storage/vendor/twig/twig/src/Parser.php(143): Twig\TokenStream->expect(4) #1 /home/*******/storage/vendor/twig/twig/src/TokenParser/IfTokenParser.php(39): Twig\Parser->subparse(Array) #2 /home/*******/storage/vendor/twig/twig/src/Parser.php(185): Twig\TokenParser\IfTokenParser->parse(Object(Twig\Token)) #3 /home/*******/storage/vendor/twig/twig/src/Parser.php(98): Twig\Parser->subparse(NULL, false) #4 /home/*******/storage/vendor/twig/twig/src/Environment.php(563): Twig\Parser->parse(Object(Twig\TokenStream)) #5 /home/*******/storage/vendor/twig/twig/src/Environment.php(595): Twig\Environment->parse(Object(Twig\TokenStream)) #6 /home/*******. in /home/*******/www/catalog/view/theme/unishop2/template/product/product.twig on line 144

<button type="button" class="quick_order btn btn-lg {{not quick_order ? 'hidden'}}" data-toggle="tooltip" title="{{ quick_order_title }}" onclick="quick-order('{{ product_id }}');"><i class="{{quick_order_icon}}"></i>{% if show_quick_order_text_product %}<span class="hidden-xs hidden-sm">{{quick_order_title}}</span>{% endif %}</button>