Fatal error: Uncaught Error: Class 'Zend_Json' not found in /home/pantheon/public_html/RM/userdata/views/user/scripts/User/details/mobilenumber_user.phtml:3 Stack trace: #0 {main} thrown in /home/pantheon/public_html/RM/userdata/views/user/scripts/User/details/mobilenumber_user.phtml on line 3