Reserveren

Fatal error: Uncaught TypeError: model::getCategories(): Argument #1 ($parentId) must be of type int, null given, called in /home/lasergamev/domains/lasergameverhuur.nl/public_html/app/components/com_reserveren/models/model.php on line 131 and defined in /home/lasergamev/domains/lasergameverhuur.nl/public_html/app/components/com_reserveren/models/model.php:100 Stack trace: #0 /home/lasergamev/domains/lasergameverhuur.nl/public_html/app/components/com_reserveren/models/model.php(131): model->getCategories() #1 /home/lasergamev/domains/lasergameverhuur.nl/public_html/app/components/com_reserveren/views/overview.php(151): model->getParentIdByItemAlias() #2 /home/lasergamev/domains/lasergameverhuur.nl/public_html/app/core/controller.php(44): require('...') #3 /home/lasergamev/domains/lasergameverhuur.nl/public_html/app/components/com_reserveren/controllers/controller.php(47): Controller->view() #4 /home/lasergamev/domains/lasergameverhuur.nl/public_html/app/core/framework.php(331): com_reserveren->setView() #5 /home/lasergamev/domains/lasergameverhuur.nl/public_html/app/core/framework.php(102): core\Framework->loadController() #6 /home/lasergamev/domains/lasergameverhuur.nl/public_html/public/index.php(21): core\Framework->init() #7 {main} thrown in /home/lasergamev/domains/lasergameverhuur.nl/public_html/app/components/com_reserveren/models/model.php on line 100