Fatal error: Uncaught Error: Call to undefined function add_filter() in /users/robiniffert95/www/gustavguns/wp-content/plugins/pelicula-core/helpers/helper.php:21 Stack trace: #0 {main} thrown in /users/robiniffert95/www/gustavguns/wp-content/plugins/pelicula-core/helpers/helper.php on line 21