Add comment on WP Portfolio

/**
 * Add comments support
 *
 * @since 1.0.0
 */
if( ! function_exists( 'astra_child_add_comments_support' ) ) :

    function astra_child_add_comments_support( $defaults )
    {
        $defaults['supports'][] = 'comments';

        return $defaults;
    }
    add_filter( 'astra_portfolio_post_type_args', 'astra_child_add_comments_support' );