Notice: Undefined variable: material  in /v1/www/magento.mainacad.com/app/code/core/Mage/Catalog/controllers/CategoryController.php on line 49

#0 /v1/www/magento.mainacad.com/app/code/core/Mage/Catalog/controllers/CategoryController.php(49): mageCoreErrorHandler(8, 'Undefined varia...', '/v1/www/magento...', 49, Array)
#1 /v1/www/magento.mainacad.com/app/code/core/Mage/Catalog/controllers/CategoryController.php(125): Mage_Catalog_CategoryController->_initCatagory()
#2 /v1/www/magento.mainacad.com/app/code/core/Mage/Core/Controller/Varien/Action.php(418): Mage_Catalog_CategoryController->viewAction()
#3 /v1/www/magento.mainacad.com/app/code/core/Mage/Core/Controller/Varien/Router/Standard.php(250): Mage_Core_Controller_Varien_Action->dispatch('view')
#4 /v1/www/magento.mainacad.com/app/code/core/Mage/Core/Controller/Varien/Front.php(172): Mage_Core_Controller_Varien_Router_Standard->match(Object(Mage_Core_Controller_Request_Http))
#5 /v1/www/magento.mainacad.com/app/code/core/Mage/Core/Model/App.php(354): Mage_Core_Controller_Varien_Front->dispatch()
#6 /v1/www/magento.mainacad.com/app/Mage.php(684): Mage_Core_Model_App->run(Array)
#7 /v1/www/magento.mainacad.com/index.php(88): Mage::run('', 'store')
#8 {main}