由于内置WordPress类别和archive-news.php的冲突slu-,单个{post-type} .php导致404为自定义后期类型

I'm getting a 404 on my created custom-post-type when visiting the post URL.

Correct permalink structure, but results in 404:

I changed the custom set slug from the built-in WP category that I'm using to default blank setting which results in success in seeing the single-{post-type}.php post but with the drawback that my pretty permalink structure isn't as I want it to be.

Incorrect permalink structure, but post is accessible:

Custom post type: "news" which uses the built-in WP "Category"

    /*----------------------------*/
    /*-- Custom post type: News --*/
    /*----------------------------*/
    function dm_cptNews() {

        $labels = array(
            'name'                  => _x( 'News items', 'Post Type General Name', 'foobar-2k19' ),
            'singular_name'         => _x( 'News Item', 'Post Type Singular Name', 'foobar-2k19' ),
            'menu_name'             => __( 'News items', 'foobar-2k19' ),
            'name_admin_bar'        => __( 'News Item', 'foobar-2k19' ),
            'archives'              => __( 'News items Archives', 'foobar-2k19' ),
            'attributes'            => __( 'News Item Attributes', 'foobar-2k19' ),
            'parent_item_colon'     => __( 'Parent News Item:', 'foobar-2k19' ),
            'all_items'             => __( 'All News Items', 'foobar-2k19' ),
            'add_new_item'          => __( 'Add New News Item', 'foobar-2k19' ),
            'add_new'               => __( 'Add New News Item', 'foobar-2k19' ),
            'new_item'              => __( 'New News Item', 'foobar-2k19' ),
            'edit_item'             => __( 'Edit News Item', 'foobar-2k19' ),
            'update_item'           => __( 'Update News Item', 'foobar-2k19' ),
            'view_item'             => __( 'View News Item', 'foobar-2k19' ),
            'view_items'            => __( 'View News Items', 'foobar-2k19' ),
            'search_items'          => __( 'Search News Item', 'foobar-2k19' ),
            'not_found'             => __( 'Not found', 'foobar-2k19' ),
            'not_found_in_trash'    => __( 'Not found in Trash', 'foobar-2k19' ),
            'featured_image'        => __( 'Featured Image', 'foobar-2k19' ),
            'set_featured_image'    => __( 'Set featured image', 'foobar-2k19' ),
            'remove_featured_image' => __( 'Remove featured image', 'foobar-2k19' ),
            'use_featured_image'    => __( 'Use as featured image', 'foobar-2k19' ),
            'insert_into_item'      => __( 'Insert into news item', 'foobar-2k19' ),
            'uploaded_to_this_item' => __( 'Uploaded to this news item', 'foobar-2k19' ),
            'items_list'            => __( 'News items list', 'foobar-2k19' ),
            'items_list_navigation' => __( 'News Items list navigation', 'foobar-2k19' ),
            'filter_items_list'     => __( 'Filter news items list', 'foobar-2k19' ),
        );
        $args = array(
            'label'                 => __( 'News Item', 'foobar-2k19' ),
            'description'           => __( 'News custom post type.', 'foobar-2k19' ),
            'labels'                => $labels,
            'supports'              => array( 'title', 'editor', 'revisions', 'post-formats', 'excerpt' ),
            'taxonomies'            => array( 'category' ),
            'hierarchical'          => false,
            'public'                => true,
            'show_ui'               => true,
            'show_in_menu'          => true,
            'menu_position'         => 27,
            'menu_icon'             => 'dashicons-megaphone',
            'show_in_admin_bar'     => true,
            'show_in_nav_menus'     => true,
            'can_export'            => true,
            'has_archive'           => false,
            'rewrite'               => array('slug' => 'news/%category%'),
            'exclude_from_search'   => false,
            'publicly_queryable'    => true,
            'capability_type'       => 'post',
        );
        register_post_type( 'news', $args );

    }
    add_action( 'init', 'dm_cptNews', 0 );

Fill %category% for prettypermalinks

    /*-------------------------------*/
    /*-- Custom slug News category --*/
    /*-------------------------------*/
    function dm_customSlugNewsCategory( $post_link, $id = 0 ){
        $post = get_post($id);  
        if ( is_object( $post ) ){
            $terms = wp_get_object_terms( $post->ID, 'category' );
            if( $terms ){
                return str_replace( '%category%' , $terms[0]->slug , $post_link );
            }
        }
        return $post_link;  
    }
    add_filter( 'post_type_link', 'dm_customSlugNewsCategory', 1, 3 );

Permalink setup

Permalinks screenshot

I'm aware that WordPress "hates" conflicting slugs, but from an SEO perspective it has to be doable. I don't want to fix the issue with some third-party plugins either.

In short: The WP built-in "Category" slug should be changed into "news" and should be able to display the single-news.php

(and yes, I flushed the permalinks after every edit.)