Fatal error: Uncaught Error: Call to undefined function is_product() in /home/drinksng2/drinks.ng/wp-content/plugins/oneclick-whatsapp-order/includes/buttons/wa-order-single-product.php:539 Stack trace: #0 /home/drinksng2/drinks.ng/wp-includes/class-wp-hook.php(287): wa_order_force_show_atc_button('') #1 /home/drinksng2/drinks.ng/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters('', Array) #2 /home/drinksng2/drinks.ng/wp-includes/plugin.php(484): WP_Hook->do_action(Array) #3 /home/drinksng2/drinks.ng/wp-includes/general-template.php(3005): do_action('wp_head') #4 /home/drinksng2/drinks.ng/wp-content/themes/storefront-childtheme/header.php(21): wp_head() #5 /home/drinksng2/drinks.ng/wp-includes/template.php(730): require_once('/home/drinksng2...') #6 /home/drinksng2/drinks.ng/wp-includes/template.php(676): load_template('/home/drinksng2...', true, Array) #7 /home/drinksng2/drinks.ng/wp-includes/general-template.php(48): locate_template(Array, true, true, Array) #8 /home/drinksng2/drinks.ng/wp-content/themes/storef in /home/drinksng2/drinks.ng/wp-content/plugins/oneclick-whatsapp-order/includes/buttons/wa-order-single-product.php on line 539