WordPress - Custom taxonomies not showing in Appearance > Menu - wordpress

Question

I have a custom post type called Resources:
register_post_type(
'resources',
build_post_args(
'resources', 'Resource', 'Resources',
array(
'menu_icon' => 'dashicons-welcome-write-blog',
'menu_position' => 20,
'has_archive' => true,
'public' => true,
'supports' => array('editor', 'title','author','thumbnail', 'revisions'),
'taxonomies' => array('sector', 'subject', 'type'),
)
)
);
I have also created the taxonomy of type which is assigned to Resources:
register_taxonomy(
'type',
'type',
array(
'hierarchical' => true,
'label' => 'Type',
'query_var' => true,
'rewrite' => array(
'slug' => 'type',
'with_front' => false
)
)
);
In the WordPress backend, here are all my type's:
However, when I go to Appearance > Menus > and click on the Categories dropdown, only these options show:
Why is this?

Answer 1

Hello Please add below code and check as you are missing lots of things when creating resources post type. (Note: Please remove all your code added for creating resources post and type taxonomy)
function ro_resources_custom_post_type() {
$labels = array(
'name' => __( 'Resources' ),
'singular_name' => __( 'Resource'),
'menu_name' => __( 'Resources'),
'parent_item_colon' => __( 'Parent Resource'),
'all_items' => __( 'All Resources'),
'view_item' => __( 'View Resource'),
'add_new_item' => __( 'Add New Resource'),
'add_new' => __( 'Add New'),
'edit_item' => __( 'Edit Resource'),
'update_item' => __( 'Update Resource'),
'search_items' => __( 'Search Resource'),
'not_found' => __( 'Not Found'),
'not_found_in_trash' => __( 'Not found in Trash')
);
$args = array(
'label' => __( 'resources'),
'description' => __( 'Best Resources'),
'labels' => $labels,
'supports' => array( 'title', 'editor', 'excerpt', 'author', 'thumbnail', 'revisions', 'custom-fields'),
'public' => true,
'hierarchical' => false,
'show_ui' => true,
'show_in_menu' => true,
'show_in_nav_menus' => true,
'show_in_admin_bar' => true,
'has_archive' => true,
'can_export' => true,
'exclude_from_search' => false,
'yarpp_support' => true,
'publicly_queryable' => true,
'capability_type' => 'page'
);
register_post_type( 'resources', $args );
}
add_action( 'init', 'ro_resources_custom_post_type', 0 );
add_action( 'init', 'ro_create_resources_custom_taxonomy', 0 );
//create a custom taxonomy name it "type" for your posts
function ro_create_resources_custom_taxonomy() {
$labels = array(
'name' => _x( 'Types', 'taxonomy general name' ),
'singular_name' => _x( 'Type', 'taxonomy singular name' ),
'search_items' => __( 'Search Types' ),
'all_items' => __( 'All Types' ),
'parent_item' => __( 'Parent Type' ),
'parent_item_colon' => __( 'Parent Type:' ),
'edit_item' => __( 'Edit Type' ),
'update_item' => __( 'Update Type' ),
'add_new_item' => __( 'Add New Type' ),
'new_item_name' => __( 'New Type Name' ),
'menu_name' => __( 'Types' ),
);
register_taxonomy('types',array('resources'), array(
'hierarchical' => true,
'labels' => $labels,
'show_ui' => true,
'show_admin_column' => true,
'query_var' => true,
'rewrite' => array( 'slug' => 'type' ),
));
}
Tested and works well