Fatal error: Uncaught Error: Class 'Zend\ServiceManager\AbstractPluginManager' not found in /var/www/html/autocar/vendor/zendframework/zend-serializer/src/AdapterPluginManager.php:23 Stack trace: #0 {main} thrown in /var/www/html/autocar/vendor/zendframework/zend-serializer/src/AdapterPluginManager.php on line 23