Fatal error: Uncaught TypeError: Argument 1 passed to CRUDProduct::getProductenQuery() must be of the type string, null given, called in /data/sites/web/hekonbe/www/content/all/price2pdf.php on line 98 and defined in /data/sites/web/hekonbe/www/classes/Product.php:380 Stack trace: #0 /data/sites/web/hekonbe/www/content/all/price2pdf.php(98): CRUDProduct->getProductenQuery(NULL, NULL) #1 /data/sites/web/hekonbe/www/content.php(14): include_once('/data/sites/web...') #2 /data/sites/web/hekonbe/www/index.php(343): include_once('/data/sites/web...') #3 {main} thrown in /data/sites/web/hekonbe/www/classes/Product.php on line 380