Fatal error: Uncaught Error: Call to undefined function add_action() in E:\www\web\wp-content\plugins\wp-carousel-free\admin\views\notices\class-wp-carousel-free-promotion.php:24 Stack trace: #0 E:\www\web\wp-content\plugins\wp-carousel-free\admin\views\notices\class-wp-carousel-free-promotion.php(178): WP_Carousel_Free_Promotion->__construct() #1 {main} thrown in E:\www\web\wp-content\plugins\wp-carousel-free\admin\views\notices\class-wp-carousel-free-promotion.php on line 24