Fatal error: Uncaught Error: Class 'Respect\Validation\Rules\AbstractRule' not found in /home/rijschoolmk/xibo.rijschool-mk.be/vendor/respect/validation/library/Rules/KeyValue.php:18 Stack trace: #0 {main} thrown in /home/rijschoolmk/xibo.rijschool-mk.be/vendor/respect/validation/library/Rules/KeyValue.php on line 18