Fatal error: Uncaught Error: Call to a member function getCategoryIds() on null in /var/hpwsites/u_plantazon/website/html/webroot/app/code/local/Tickles/Product/Helper/Data.php:48 Stack trace: #0 /var/hpwsites/u_plantazon/website/html/webroot/app/code/local/Tickles/Product/Helper/Data.php(71): Tickles_Product_Helper_Data->detectProductPosition() #1 /var/hpwsites/u_plantazon/website/html/webroot/app/design/frontend/flora/default/template/catalog/product/prevnext.phtml(1): Tickles_Product_Helper_Data->getPreviousProduct() #2 /var/hpwsites/u_plantazon/website/html/webroot/app/code/core/Mage/Core/Block/Template.php(241): include('/var/hpwsites/u...') #3 /var/hpwsites/u_plantazon/website/html/webroot/app/code/core/Mage/Core/Block/Template.php(272): Mage_Core_Block_Template->fetchView('frontend/flora/...') #4 /var/hpwsites/u_plantazon/website/html/webroot/app/code/core/Mage/Core/Block/Template.php(286): Mage_Core_Block_Template->renderView() #5 /var/hpwsites/u_plantazon/website/html/webroot/app/code/core/Mage/Core/Block/Abstrac in /var/hpwsites/u_plantazon/website/html/webroot/app/code/local/Tickles/Product/Helper/Data.php on line 48