Fatal error: Uncaught Error: Interface 'Xibo\Widget\ModuleInterface' not found in /home/rijschoolmk/xibo.rijschool-mk.be/lib/Widget/ModuleWidget.php:66 Stack trace: #0 {main} thrown in /home/rijschoolmk/xibo.rijschool-mk.be/lib/Widget/ModuleWidget.php on line 66