Fatal error: Uncaught Error: Class "Zend_Session_Validator_Abstract" not found in C:\SHC\xampp\htdocs\shc_mobile_backend\vendor\diablomedia\zendframework1-session\src\Zend\Session\Validator\HttpUserAgent.php:32 Stack trace: #0 {main} thrown in C:\SHC\xampp\htdocs\shc_mobile_backend\vendor\diablomedia\zendframework1-session\src\Zend\Session\Validator\HttpUserAgent.php on line 32