Fatal error: Uncaught Error: Class "Zend_Serializer_Adapter_AdapterAbstract" not found in C:\SHC\xampp\htdocs\shc_mobile_backend\vendor\diablomedia\zendframework1\library\Zend\Serializer\Adapter\Json.php:30 Stack trace: #0 {main} thrown in C:\SHC\xampp\htdocs\shc_mobile_backend\vendor\diablomedia\zendframework1\library\Zend\Serializer\Adapter\Json.php on line 30