在定义自定义帖子类型的代码中（在自定义插件或functions.php文件），您需要添加此代码段以支持Gutenberg块编辑器：

\'show_in_rest\' => true,
   \'supports\' => array(\'editor\')

function portfolio_post_type() {
    register_post_type( \'portfolio\',
        array(
            \'labels\' => array(
                \'name\' => __( \'Portfolio\' ),
                \'singular_name\' => __( \'Portfolio\' )
            ),
            \'has_archive\' => true,
            \'public\' => true,
            \'rewrite\' => array(\'slug\' => \'portfolio\'),
            \'show_in_rest\' => true,
            \'supports\' => array(\'editor\')
        )
    );
}
 
add_action( \'init\', \'portfolio_post_type\' );