White page visualizing a custom post type

Hi,

I created a CPT in a plugin but when I try to visualize it in the front end I get a white page. What’s wrong?

The following is the code I used to create the CPT:

<code>

function richieste() {

$labels = array(

‘name’                => _x( ‘Richieste’, ‘Post Type General Name’, ‘gpro’ ),

‘singular_name’       => _x( ‘Richiesta’, ‘Post Type Singular Name’, ‘gpro’ ),

‘menu_name’           => __( ‘Richieste’, ‘gpro’ ),

‘name_admin_bar’      => __( ‘Richieste’, ‘gpro’ ),

‘parent_item_colon’   => __( ‘Richiesta padre:’, ‘gpro’ ),

‘all_items’           => __( ‘Tutte le richieste’, ‘gpro’ ),

‘add_new_item’        => __( ‘Aggiungi nuova richiesta’, ‘gpro’ ),

‘add_new’             => __( ‘Aggiungi nuova’, ‘gpro’ ),

‘new_item’            => __( ‘Nuova richiesta’, ‘gpro’ ),

‘edit_item’           => __( ‘Modifica richiesta’, ‘gpro’ ),

‘update_item’         => __( ‘Aggiorna richiesta’, ‘gpro’ ),

‘view_item’           => __( ‘Visualizza richiesta’, ‘gpro’ ),

‘search_items’        => __( ‘Cerca richiesta’, ‘gpro’ ),

‘not_found’           => __( ‘Non trovata’, ‘gpro’ ),

‘not_found_in_trash’  => __( ‘Non trovata nel cestino’, ‘gpro’ ),

);

$args = array(

‘label’               => __( ‘Richiesta’, ‘gpro’ ),

‘description’         => __( ‘Queste sono le richieste che i clienti possono fare ai consulenti g-pro’, ‘gpro’ ),

‘labels’              => $labels,

‘supports’            => array( ‘title’, ‘editor’, ‘excerpt’, ‘author’, ‘thumbnail’, ‘comments’, ‘revisions’, ‘custom-fields’, ‘page-attributes’, ),

‘taxonomies’          => array( ‘category’, ‘post_tag’ ),

‘hierarchical’        => false,

‘public’              => true,

‘show_ui’             => true,

‘show_in_menu’        => true,

‘menu_position’       => 5,

‘menu_icon’           => ‘dashicons-testimonial’,

‘show_in_admin_bar’   => true,

‘show_in_nav_menus’   => true,

‘can_export’          => true,

‘has_archive’         => true,

‘exclude_from_search’ => false,

‘publicly_queryable’  => true,

‘capability_type’     => ‘post’,

);

register_post_type( ‘richieste’, $args );

}

add_action( ‘init’, ‘richieste’, 0 );

</code>