WP_Error on attribute + term insert

Try to reregister taxonomies

$args = array(
  'name'         => "Color",
  'slug'         => "color",
  'order_by'     => "menu_order",
  'has_archives' => "",
);
wc_create_attribute($args);
WC_Post_Types::register_taxonomies();

$add = wp_insert_term( "Blue", 'pa_color', array( 'slug' => "blue" ) );
print_r($add);