Fatal error: Uncaught Error: Call to undefined function get_userdata() in /home/simhabanud/www/wp-includes/user.php:460 Stack trace: #0 /home/simhabanud/www/wp-content/plugins/wordpress-seo/admin/class-yoast-notification-center.php(428): get_user_option('yoast_notificat...', 0) #1 /home/simhabanud/www/wp-content/plugins/wordpress-seo/admin/class-yoast-notification-center.php(31): Yoast_Notification_Center->retrieve_notifications_from_storage() #2 /home/simhabanud/www/wp-content/plugins/wordpress-seo/admin/class-yoast-notification-center.php(49): Yoast_Notification_Center->__construct() #3 /home/simhabanud/www/wp-content/plugins/wordpress-seo/wp-seo-main.php(409): Yoast_Notification_Center::get() #4 /home/simhabanud/www/wp-includes/class-wp-hook.php(298): load_yoast_notifications('') #5 /home/simhabanud/www/wp-includes/class-wp-hook.php(323): WP_Hook->apply_filters(NULL, Array) #6 /home/simhabanud/www/wp-includes/plugin.php(453): WP_Hook->do_action(Array) #7 /home/simhabanud/www/wp-settings.php(335): do_action('plugins_loa in /home/simhabanud/www/wp-includes/user.php on line 460