Fatal error: Uncaught Error: Call to a member function getId() on null in /home/meubel/httpdocs/app/code/core/Mage/Catalog/Model/Product/Type/Configurable.php:283 Stack trace: #0 /home/meubel/httpdocs/app/code/community/Solvingmagento/GroupedRedirect/Model/Observer.php(47): Mage_Catalog_Model_Product_Type_Configurable->getConfigurableAttributesAsArray(Object(Mage_Catalog_Model_Product)) #1 /home/meubel/httpdocs/app/code/core/Mage/Core/Model/App.php(1384): Solvingmagento_GroupedRedirect_Model_Observer->redirectGrouped(Object(Varien_Event_Observer)) #2 /home/meubel/httpdocs/app/code/core/Mage/Core/Model/App.php(1363): Mage_Core_Model_App->_callObserverMethod(Object(Solvingmagento_GroupedRedirect_Model_Observer), 'redirectGrouped', Object(Varien_Event_Observer)) #3 /home/meubel/httpdocs/app/Mage.php(457): Mage_Core_Model_App->dispatchEvent('controller_acti...', Array) #4 /home/meubel/httpdocs/app/code/core/Mage/Core/Controller/Varien/Action.php(531): Mage::dispatchEvent('controller_acti...', Array) #5 /home/meubel/httpdocs/a in /home/meubel/httpdocs/app/code/core/Mage/Catalog/Model/Product/Type/Configurable.php on line 283