Fatal error: Uncaught Error: Call to undefined function is_product() in /home/queenexp/public_html/wp-content/plugins/download-now-for-woocommerce/woo-files/somdn-woo-functions.php:162 Stack trace: #0 /home/queenexp/public_html/wp-includes/class-wp-hook.php(287): somdn_is_single_product_woo(false) #1 /home/queenexp/public_html/wp-includes/plugin.php(212): WP_Hook->apply_filters(false, Array) #2 /home/queenexp/public_html/wp-content/plugins/download-now-for-woocommerce/includes/somdn-functions.php(141): apply_filters('somdn_is_single...', false) #3 /home/queenexp/public_html/wp-content/plugins/download-now-for-woocommerce/woo-files/somdn-woo-compatibility.php(460): somdn_is_single_product() #4 /home/queenexp/public_html/wp-includes/class-wp-hook.php(287): somdn_purchasable_compat_head('') #5 /home/queenexp/public_html/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters(NULL, Array) #6 /home/queenexp/public_html/wp-includes/plugin.php(484): WP_Hook->do_action(Array) #7 /home/queenexp/public_html/wp-includes/general-t in /home/queenexp/public_html/wp-content/plugins/download-now-for-woocommerce/woo-files/somdn-woo-functions.php on line 162