Fatal error: Uncaught Error: Call to undefined function add_action() in /home/ola/public_html/wp-content/plugins/radiantthemes-mega-menu/lib/widgets.php:9 Stack trace: #0 /home/ola/public_html/wp-content/plugins/radiantthemes-mega-menu/lib/widgets.php(233): RT_Megamenu_Widgets->__construct() #1 {main} thrown in /home/ola/public_html/wp-content/plugins/radiantthemes-mega-menu/lib/widgets.php on line 9