Fatal error: Uncaught Error: Call to a member function is_on_sale() on null in /home/customer/www/douwedegraaf.com/public_html/wp-content/themes/dgrfdsgn_theme_2022/woocommerce/single-product/sale-flash.php:25 Stack trace: #0 /home/customer/www/douwedegraaf.com/public_html/wp-content/plugins/woocommerce/includes/wc-core-functions.php(345): include() #1 /home/customer/www/douwedegraaf.com/public_html/wp-content/plugins/woocommerce/includes/wc-template-functions.php(1677): wc_get_template('single-product/...') #2 /home/customer/www/douwedegraaf.com/public_html/wp-includes/class-wp-hook.php(308): woocommerce_show_product_sale_flash('') #3 /home/customer/www/douwedegraaf.com/public_html/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters('', Array) #4 /home/customer/www/douwedegraaf.com/public_html/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #5 /home/customer/www/douwedegraaf.com/public_html/wp-content/themes/dgrfdsgn_theme_2022/template-parts/content/content-single.php(43): do_action('woocommerce_bef...') # in /home/customer/www/douwedegraaf.com/public_html/wp-content/themes/dgrfdsgn_theme_2022/woocommerce/single-product/sale-flash.php on line 25