Fatal error: Uncaught Error: Class "Zend_Gdata_App_Extension_Link" not found in D:\htdocs\SuiteCRM\vendor\zf1\zend-gdata\library\Zend\Gdata\Books\Extension\BooksLink.php:38 Stack trace: #0 {main} thrown in D:\htdocs\SuiteCRM\vendor\zf1\zend-gdata\library\Zend\Gdata\Books\Extension\BooksLink.php on line 38