No se mustran las categorias

-- url of the page with the problem -- : librosdehoy.com/site/index.php/hikashop
-- HikaShop version -- : HikaShop Business 2.2.2
-- Joomla version -- : 3.3.6
-- Error-message(debug-mod must be tuned on) -- : Warning: Missing argument 2 for CategoryViewCategory::getLink(), called in /home3/xipali/public_html/site/templates/gk_storefront/html/com_hikashop/category/listing_img_title.php on line 11 and defined in /home3/xipali/public_html/site/components/com_hikashop/views/category/view.html.php on line 417

Catchable fatal error: Object of class stdClass could not be converted to string in /home3/xipali/public_html/site/components/com_hikashop/views/category/view.html.php on line 441

Warning: Missing argument 2 for CategoryViewCategory::getLink(), called in /home3/xipali/public_html/site/templates/gk_storefront/html/com_hikashop/category/listing_img_title.php on line 11 and defined in /home3/xipali/public_html/site/components/com_hikashop/views/category/view.html.php on line 417

Catchable fatal error: Object of class stdClass could not be converted to string in /home3/xipali/public_html/site/components/com_hikashop/views/category/view.html.php on line 441

Hi,

There errors come from your Joomla template which was made from a recent version of HikaShop while you're using a really old version.
Update HikaShop to the latest version of HikaShop and it should not have that error.