Fatal error: Uncaught Error: Call to undefined function add_action() in /www/wwwroot/wczhuti/wp-content/plugins/pinglun/includes/user-feedback-module.php:13 Stack trace: #0 /www/wwwroot/wczhuti/wp-content/plugins/pinglun/includes/user-feedback-module.php(198): User_Feedback_Module->__construct() #1 {main} thrown in /www/wwwroot/wczhuti/wp-content/plugins/pinglun/includes/user-feedback-module.php on line 13