Warning: include_once(DOMDocument.php): failed to open stream: No such file or directory in /usr/share/php/Zend/Loader.php on line 146

Warning: include_once(): Failed opening 'DOMDocument.php' for inclusion (include_path='.:/var/www/xining.westgis.ac.cn/include/:../application/models:/var/www/xining.westgis.ac.cn/include/:../application/default/controllers:.:/usr/share/php') in /usr/share/php/Zend/Loader.php on line 146

Fatal error: Uncaught Error: Class 'DOMDocument' not found in /var/www/xining.westgis.ac.cn/application/default/controllers/ServiceController.php:308 Stack trace: #0 /usr/share/php/Zend/Controller/Action.php(516): ServiceController->docAction() #1 /usr/share/php/Zend/Controller/Dispatcher/Standard.php(295): Zend_Controller_Action->dispatch('docAction') #2 /usr/share/php/Zend/Controller/Front.php(954): Zend_Controller_Dispatcher_Standard->dispatch(Object(Zend_Controller_Request_Http), Object(Zend_Controller_Response_Http)) #3 /var/www/xining.westgis.ac.cn/htdocs/index.php(55): Zend_Controller_Front->dispatch() #4 {main} thrown in /var/www/xining.westgis.ac.cn/application/default/controllers/ServiceController.php on line 308