Fatal error: Uncaught Error: Interface 'React\EventLoop\Timer\TimerInterface' not found in /home/rijschoolmk/xibo.rijschool-mk.be/vendor/react/event-loop/src/Timer/Timer.php:7 Stack trace: #0 {main} thrown in /home/rijschoolmk/xibo.rijschool-mk.be/vendor/react/event-loop/src/Timer/Timer.php on line 7