我已经创建了一个自定义帖子类型和分类法，当我单击分类法链接时，它返回404错误，

这就是我创建自定义帖子类型和分类法的方式。

function create_post_type_press()
{
    $labels = array(\'name\' => __( \'News\', \'example\' ),
                    \'singular_name\' => __( \'News\', \'example\' ),
                    // \'add_new\' => __( \'Add New Article\', \'example\' ),
                    \'add_new_item\' => __( \'Add News\', \'example\' ),
                    \'edit_item\' => __( \'Edit News\', \'example\' ),
                    \'new_item\' => __( \'New News\', \'example\' ),
                    \'view_item\' => __( \'View PNews\', \'example\' ),
                    \'search_items\' => __( \'Search News\', \'example\' ),
                    \'not_found\' =>  __( \'No News found\', \'example\' ),
                    \'not_found_in_trash\' => __( \'No News found in Trash\', \'example\' ),
                    \'parent_item_colon\' => \'\',
                    \'menu_name\' => \'News\');

    $args = array(  \'labels\' => $labels,
                    \'public\' => true,
                    \'publicly_queryable\' => true,
                    \'show_ui\' => true,
                    \'query_var\' => true,
                    \'show_in_nav_menus\' => true,
                    \'capability_type\' => \'post\',
                    \'menu_icon\' => get_template_directory_uri() . \'/image/settings.png\',
                    \'hierarchical\' => false,
                    \'menu_position\' => 90,
                    \'supports\' => array( \'title\', \'editor\', \'thumbnail\', \'revisions\', ),
                    \'rewrite\' => array( \'slug\' => \'news-topic\', \'with_front\' => false ));
    register_post_type( \'news_article\' , $args );
}
add_action( \'init\', \'create_post_type_press\' );  


function news_topic() {  
    register_taxonomy(  
    \'topic\',  
    \'news_article\',  
        array(  
            \'hierarchical\' => true,  
            \'label\' => \'Topics\',  
            \'query_var\' => true,  
            \'rewrite\' => array(\'slug\' => \'news-topic\')  
        )  
    );  
} 

    function get_terms_dropdown($taxonomies, $args){
        $myterms = get_terms($taxonomies, $args);
        $output ="<select id=\'dynamic_select\'><option selected class=\'drop_down\'>Default</option>";
        foreach($myterms as $term){
            $root_url = get_bloginfo(\'url\');
            $term_taxonomy=$term->taxonomy;
            $term_slug=$term->slug;
            $term_name =$term->name;
            $link = $term_slug;
            $output .="<option><a href=\'".$term_link."\'>".$term_name."</a></option>";
        }
        $output .="</select>";
    return $output;
    }
    $taxonomies = array(\'topic\');
    $args = array(\'orderby\'=>\'count\',\'hide_empty\'=>true);
    echo get_terms_dropdown($taxonomies, $args);