Fatal error: Uncaught Error: Call to undefined function add_action() in E:\www\web\wp-content\plugins\wp-carousel-free\admin\preview\class-wp-carousel-free-preview.php:32 Stack trace: #0 E:\www\web\wp-content\plugins\wp-carousel-free\admin\preview\class-wp-carousel-free-preview.php(22): WP_Carousel_Free_Preview->wpcf_preview_action() #1 E:\www\web\wp-content\plugins\wp-carousel-free\admin\preview\class-wp-carousel-free-preview.php(68): WP_Carousel_Free_Preview->__construct() #2 {main} thrown in E:\www\web\wp-content\plugins\wp-carousel-free\admin\preview\class-wp-carousel-free-preview.php on line 32