Fatal error: Uncaught Error: Call to undefined function add_action() in /home/user2040093/www/belaquilon.by/wp-content/plugins/wp-views_old/inc/wpv-settings-screen.class.php:19 Stack trace: #0 /home/user2040093/www/belaquilon.by/wp-content/plugins/wp-views_old/inc/wpv-settings-screen.class.php(12): WPV_Settings_Screen->__construct() #1 /home/user2040093/www/belaquilon.by/wp-content/plugins/wp-views_old/inc/wpv-settings-screen.class.php(1387): WPV_Settings_Screen::get_instance() #2 {main} thrown in /home/user2040093/www/belaquilon.by/wp-content/plugins/wp-views_old/inc/wpv-settings-screen.class.php on line 19