Fatal error: Uncaught Error: Call to undefined function add_action() in C:\xampp\htdocs\wp-content\plugins\advanced-custom-fields\includes\forms\form-comment.php:31 Stack trace: #0 C:\xampp\htdocs\wp-content\plugins\advanced-custom-fields\includes\forms\form-comment.php(303): acf_form_comment->__construct() #1 {main} thrown in C:\xampp\htdocs\wp-content\plugins\advanced-custom-fields\includes\forms\form-comment.php on line 31