Fatal error: Uncaught ArgumentCountError: Too few arguments to function core::get_single_item(), 2 passed in /home/hotelkom/domains/hotelkom.nl/public_html/includes/class/core.class.php on line 353 and exactly 3 expected in /home/hotelkom/domains/hotelkom.nl/public_html/includes/class/core.class.php:1412 Stack trace: #0 /home/hotelkom/domains/hotelkom.nl/public_html/includes/class/core.class.php(353): core->get_single_item() #1 /home/hotelkom/domains/hotelkom.nl/public_html/index.php(37): core->get_page() #2 {main} thrown in /home/hotelkom/domains/hotelkom.nl/public_html/includes/class/core.class.php on line 1412