Fatal error: Uncaught Error: Call to a member function is_type() on null in /home/customer/www/shop.stoomtreinmaldegem.be/public_html/wp-content/themes/groppe/inc/plugins/woocommerce/woo-config.php:80 Stack trace: #0 /home/customer/www/shop.stoomtreinmaldegem.be/public_html/wp-includes/class-wp-hook.php(310): groppe_product_add_to_cart('Toevoegen aan w...') #1 /home/customer/www/shop.stoomtreinmaldegem.be/public_html/wp-includes/plugin.php(205): WP_Hook->apply_filters('Toevoegen aan w...', Array) #2 /home/customer/www/shop.stoomtreinmaldegem.be/public_html/wp-content/plugins/woocommerce/includes/class-wc-product-simple.php(62): apply_filters('woocommerce_pro...', 'Toevoegen aan w...', Object(WC_Product_Simple)) #3 /home/customer/www/shop.stoomtreinmaldegem.be/public_html/wp-content/plugins/woocommerce/packages/woocommerce-blocks/src/StoreApi/Schemas/V1/ProductSchema.php(477): WC_Product_Simple->add_to_cart_text() #4 [internal function]: Automattic\WooCommerce\StoreApi\Schemas\V1\ProductSchema->get_item_response(Object(WC_ in /home/customer/www/shop.stoomtreinmaldegem.be/public_html/wp-content/themes/groppe/inc/plugins/woocommerce/woo-config.php on line 80