Fatal error: Uncaught Error: Call to undefined function add_action() in /home/malvernj/public_html/wp-content/plugins/wp-realtime-sitemap/wp-realtime-sitemap.php:37 Stack trace: #0 /home/malvernj/public_html/wp-content/plugins/wp-realtime-sitemap/wp-realtime-sitemap.php(1909): WPRealtimeSitemap->__construct() #1 {main} thrown in /home/malvernj/public_html/wp-content/plugins/wp-realtime-sitemap/wp-realtime-sitemap.php on line 37