Fatal error: Uncaught Error: Function name must be a string in /home/spectram/public_html/app/code/core/Mage/Core/Model/Layout.php:555 Stack trace: #0 /home/spectram/public_html/app/code/core/Mage/Core/Controller/Varien/Action.php(390): Mage_Core_Model_Layout->getOutput() #1 /home/spectram/public_html/app/code/local/Magentothem/Layerednavigationajax/controllers/CategoryController.php(127): Mage_Core_Controller_Varien_Action->renderLayout() #2 /home/spectram/public_html/app/code/core/Mage/Core/Controller/Varien/Action.php(418): Magentothem_Layerednavigationajax_CategoryController->viewAction() #3 /home/spectram/public_html/app/code/core/Mage/Core/Controller/Varien/Router/Standard.php(250): Mage_Core_Controller_Varien_Action->dispatch('view') #4 /home/spectram/public_html/app/code/core/Mage/Core/Controller/Varien/Front.php(172): Mage_Core_Controller_Varien_Router_Standard->match(Object(Mage_Core_Controller_Request_Http)) #5 /home/spectram/public_html/app/code/core/Mage/Core/Model/App.php(354): Mage_Core_Controller_Varien_Fr in /home/spectram/public_html/app/code/core/Mage/Core/Model/Layout.php on line 555