Fatal error: Uncaught Error: Call to undefined function add_action() in /var/www/mode/wp-content/plugins/events-manager/classes/em-admin-notices.php:18 Stack trace: #0 /var/www/mode/wp-content/plugins/events-manager/classes/em-admin-notices.php(225): EM_Admin_Notices::init() #1 {main} thrown in /var/www/mode/wp-content/plugins/events-manager/classes/em-admin-notices.php on line 18