Fatal error: Uncaught TypeError: Return value of Labelx_Brand_Model_Observer_Alternate::getBrandUrl() must be of the type string, null returned in /var/domains/parfumswinkel-parfumswinkel.nl/public_html/app/code/local/Labelx/Brand/Model/Observer/Alternate.php:78 Stack trace: #0 /var/domains/parfumswinkel-parfumswinkel.nl/public_html/app/code/local/Labelx/Brand/Model/Observer/Alternate.php(21): Labelx_Brand_Model_Observer_Alternate->getBrandUrl(43880, 5) #1 /var/domains/parfumswinkel-parfumswinkel.nl/public_html/app/code/core/Mage/Core/Model/App.php(1358): Labelx_Brand_Model_Observer_Alternate->addAlternate(Object(Varien_Event_Observer)) #2 /var/domains/parfumswinkel-parfumswinkel.nl/public_html/app/code/core/Mage/Core/Model/App.php(1331): Mage_Core_Model_App->_callObserverMethod(Object(Labelx_Brand_Model_Observer_Alternate), 'addAlternate', Object(Varien_Event_Observer)) #3 /var/domains/parfumswinkel-parfumswinkel.nl/public_html/app/Mage.php(451): Mage_Core_Model_App->dispatchEvent('controller_acti...', Array) #4 /var/dom in /var/domains/parfumswinkel-parfumswinkel.nl/public_html/app/code/local/Labelx/Brand/Model/Observer/Alternate.php on line 78