I’m trying to add a custom taxonomy to a menu, but for some reason it won’t show.
This is the custom post type that I want use to associate the taxonomy:
$ labels = array( 'name' => 'Esperienza', 'singular_name' => 'Esperienza', 'menu_name' => 'Esperienza', 'all_items' => 'Esperienza', 'add_new' => 'Aggiungi nuovo', 'add_new_item' => 'Aggiungi nuova Esperienza', 'edit' => 'Modifica', 'edit_item' => 'Modifica Esperienza', 'new_item' => 'Aggiungi nuova Esperienza', 'view' => 'Visualizza Esperienza', 'view_item' => 'Visualizza Esperienza', 'search_items' => 'Cerca Esperienza', 'not_found' => 'Nessun Esperienza trovata', 'not_found_in_trash' => 'Nessun Esperienza trovata', 'parent' => 'Esperienza genitore', 'filter_items_list' => 'Esperienza $ s', 'items_list_navigation' => 'Navigazione', 'items_list' => 'Lista Esperienza', 'view items' => 'Visualizza Esperienza', 'attributes' => 'Attributi Esperienza' ); $ args = array( 'labels' => $ labels, 'public' => true, 'publicly_queryable' => true, 'show_ui' => true, 'query_var' => true, 'rewrite' => array('slug' => 'st_experiences'), 'has_archive' => true, 'hierarchical' => false, 'menu_position' => 0, 'show_in_menu' => 'edit.php?post_type=st_tours', 'supports' => array('title', 'editor', 'author', 'thumbnail', 'excerpt', 'comments'), 'taxonomies' => array('st_experience_categories') ); register_post_type('st_experiences', $ args);
and this is the custom taxonomy:
function experience_category_post_type() { $ labels = [ 'name' => __('Categorie esperienze', 'traveler'), 'singular_name' => __('Categorie esperienze', 'traveler'), 'search_items' => __('Search Categorie esperienze', 'traveler'), 'popular_items' => __('Popular Categorie esperienze', 'traveler'), 'all_items' => __('All Categorie esperienze', 'traveler'), 'parent_item' => null, 'parent_item_colon' => null, 'edit_item' => __('Edit Categorie esperienze', 'traveler'), 'update_item' => __('Update Categorie esperienze', 'traveler'), 'add_new_item' => __('Add New Categorie esperienze', 'traveler'), 'new_item_name' => __('New Experience Type Name', 'traveler'), 'separate_items_with_commas' => __('Separate Categorie esperienze with commas', 'traveler'), 'add_or_remove_items' => __('Add or remove Categorie esperienze', 'traveler'), 'choose_from_most_used' => __('Choose from the most used Categorie esperienze', 'traveler'), 'not_found' => __('No Categorie esperienze.', 'traveler'), 'menu_name' => __('Categorie Esperienze', 'traveler'), ]; register_taxonomy('st_experience_categories', array('st_experiences'), array( 'labels' => $ labels, 'show_ui' => true, 'show_admin_column' => true, 'query_var' => true, 'rewrite' => array('slug' => 'st_experience_categories'), 'show_in_menu' => 'edit.php?post_type=st_tours', 'show_in_nav_menus' => true, 'hierarchical' => true )); } add_action('init', 'experience_category_post_type');
when I visit my custom post I correctly see the taxonomy on the right menu:

but on the left side menu I can’t get displayed:

what I did wrong?