Fatal error: Uncaught exception 'Zend_Cache_Exception' with message 'The xcache extension must be loaded for using this backend !' in /usr/local/lib/frameworks/ZendFramework-1.11.9/Zend/Cache.php:209 Stack trace: #0 /usr/local/lib/frameworks/ZendFramework-1.11.9/Zend/Cache/Backend/Xcache.php(76): Zend_Cache::throwException('The xcache exte...') #1 /usr/local/lib/frameworks/ZendFramework-1.11.9/Zend/Cache.php(153): Zend_Cache_Backend_Xcache->__construct(Array) #2 /usr/local/lib/frameworks/ZendFramework-1.11.9/Zend/Cache.php(94): Zend_Cache::_makeBackend('Xcache', Array, false, false) #3 /usr/local/lib/frameworks/ZendFramework-1.11.9/Zend/Cache/Manager.php(173): Zend_Cache::factory('Core', 'Xcache', Array, Array, false, false, false) #4 /usr/local/lib/frameworks/ZendFramework-1.11.9/Zend/Application/Resource/Db.php(180): Zend_Cache_Manager->getCache('metadata') #5 /usr/local/lib/frameworks/ZendFramework-1.11.9/Zend/Application/Resource/ResourceAbstract.php(98): Zend_Application_Resource_Db->setDefaultMetadataCache('metadata in /usr/local/lib/frameworks/ZendFramework-1.11.9/Zend/Cache.php on line 209