Fatal error: Uncaught Error: Call to undefined function add_action() in D:\Domains\wmrtss.org.uk\wwwroot\wp-content\plugins\events-manager\classes\em-admin-notices.php:18 Stack trace: #0 D:\Domains\wmrtss.org.uk\wwwroot\wp-content\plugins\events-manager\classes\em-admin-notices.php(225): EM_Admin_Notices::init() #1 {main} thrown in D:\Domains\wmrtss.org.uk\wwwroot\wp-content\plugins\events-manager\classes\em-admin-notices.php on line 18