Fatal error: Uncaught TypeError: array_column(): Argument #1 ($array) must be of type array, null given in /var/www/vhosts/gtll.nl/httpdocs/resource/template/template_product-categorie.php:11 Stack trace: #0 /var/www/vhosts/gtll.nl/httpdocs/resource/template/template_product-categorie.php(11): array_column() #1 /var/www/vhosts/gtll.nl/httpdocs/resource/template/template_producten.php(13): include('...') #2 /var/www/vhosts/gtll.nl/httpdocs/resource/template/template_module.php(5): include('...') #3 /var/www/vhosts/gtll.nl/httpdocs/resource/template/default/body.php(26): include('...') #4 /var/www/vhosts/gtll.nl/httpdocs/index.php(34): include('...') #5 {main} thrown in /var/www/vhosts/gtll.nl/httpdocs/resource/template/template_product-categorie.php on line 11