Fatal error: Uncaught exception 'Zend_Gdata_App_Exception' with message 'DOMDocument cannot parse XML: DOMDocument::loadXML(): Empty string supplied as input' in /home/rdhyee/examples.mashupguide.net/lib/ZendFramework-1.0.2/library/Zend/Gdata/App.php:315 Stack trace: #0 /home/rdhyee/examples.mashupguide.net/lib/ZendFramework-1.0.2/library/Zend/Gdata/App.php(287): Zend_Gdata_App::importString('', 'Zend_Gdata_Spre...') #1 /home/rdhyee/examples.mashupguide.net/lib/ZendFramework-1.0.2/library/Zend/Gdata/App.php(126): Zend_Gdata_App::import('http://spreadsh...', Object(Zend_Http_Client), 'Zend_Gdata_Spre...') #2 /home/rdhyee/examples.mashupguide.net/lib/ZendFramework-1.0.2/library/Zend/Gdata.php(109): Zend_Gdata_App->getFeed('http://spreadsh...', 'Zend_Gdata_Spre...') #3 /home/rdhyee/examples.mashupguide.net/lib/ZendFramework-1.0.2/library/Zend/Gdata/Spreadsheets.php(137): Zend_Gdata->getFeed('http://spreadsh...', 'Zend_Gdata_Spre...') #4 /home/rdhyee/examples.mashupguide.net/ch17/getspreadsheets.php(41): Zend_Gdata_Spreadshee in /home/rdhyee/examples.mashupguide.net/lib/ZendFramework-1.0.2/library/Zend/Gdata/App.php on line 315