Fatal error: Uncaught Error: Call to undefined function is_product() in /home/sites/prometheusjournal.co.uk/public_html/wp-content/plugins/download-now-for-woocommerce/woo-files/somdn-woo-functions.php:96
Stack trace:
#0 /home/sites/prometheusjournal.co.uk/public_html/wp-includes/class-wp-hook.php(324): somdn_is_single_product_woo(false)
#1 /home/sites/prometheusjournal.co.uk/public_html/wp-includes/plugin.php(205): WP_Hook->apply_filters(false, Array)
#2 /home/sites/prometheusjournal.co.uk/public_html/wp-content/plugins/download-now-for-woocommerce/Includes/Legacy/somdn-functions.php(144): apply_filters('somdn_is_single...', false)
#3 /home/sites/prometheusjournal.co.uk/public_html/wp-content/plugins/download-now-for-woocommerce/woo-files/somdn-woo-compatibility.php(466): somdn_is_single_product()
#4 /home/sites/prometheusjournal.co.uk/public_html/wp-includes/class-wp-hook.php(324): somdn_purchasable_compat_head('')
#5 /home/sites/prometheusjournal.co.uk/public_html/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array)
#6 /home/sites/prometheusjournal.co.uk/public_html/wp-includes/plugin.php(517): WP_Hook->do_action(Array)
#7 /home/sites/prometheusjournal.co.uk/public_html/wp-includes/general-template.php(3064): do_action('wp_head')
#8 /home/sites/prometheusjournal.co.uk/public_html/wp-includes/template-canvas.php(17): wp_head()
#9 /home/sites/prometheusjournal.co.uk/public_html/wp-includes/template-loader.php(106): include('/home/sites/pro...')
#10 /home/sites/prometheusjournal.co.uk/public_html/wp-blog-header.php(19): require_once('/home/sites/pro...')
#11 /home/sites/prometheusjournal.co.uk/public_html/index.php(17): require('/home/sites/pro...')
#12 {main}
thrown in /home/sites/prometheusjournal.co.uk/public_html/wp-content/plugins/download-now-for-woocommerce/woo-files/somdn-woo-functions.php on line 96