Fatal error: Uncaught Error: Call to a member function getId() on null in /var/www/vhosts/farmaciaencasaonline.es/httpdocs/app/code/local/Amasty/Promo/Model/Observer.php:553 Stack trace: #0 /var/www/vhosts/farmaciaencasaonline.es/httpdocs/app/code/core/Mage/Core/Model/App.php(1339): Amasty_Promo_Model_Observer->onCartItemUpdateBefore(Object(Varien_Event_Observer)) #1 /var/www/vhosts/farmaciaencasaonline.es/httpdocs/app/code/core/Mage/Core/Model/App.php(1318): Mage_Core_Model_App->_callObserverMethod(Object(Amasty_Promo_Model_Observer), 'onCartItemUpdat...', Object(Varien_Event_Observer)) #2 /var/www/vhosts/farmaciaencasaonline.es/httpdocs/app/Mage.php(448): Mage_Core_Model_App->dispatchEvent('controller_acti...', Array) #3 /var/www/vhosts/farmaciaencasaonline.es/httpdocs/app/code/core/Mage/Core/Controller/Varien/Action.php(531): Mage::dispatchEvent('controller_acti...', Array) #4 /var/www/vhosts/farmaciaencasaonline.es/httpdocs/app/code/core/Mage/Core/Controller/Front/Action.php(69): Mage_Core_Controller_Varien_Action->pr in /var/www/vhosts/farmaciaencasaonline.es/httpdocs/app/code/local/Amasty/Promo/Model/Observer.php on line 553