Fatal error: Uncaught Error: Interface 'Kendo\Serializable' not found in /var/www/sites/for_new_app/kendophp/php/lib/Kendo/SerializableObject.php:5 Stack trace: #0 {main} thrown in /var/www/sites/for_new_app/kendophp/php/lib/Kendo/SerializableObject.php on line 5