创建带有分页的自定义类别页面时出现问题

I am creating a category-{slug}.php page for a specific category. This page has pagination also. This code successfully worked when calling the first page of the category page, but the problem starts when I clicked the pagination link.

When I clicked the "older entries" in the pagination, the URL changed to the following, but it\'s loading with index.php instead of category-{slug}.php and unable to show the post list:

http://localhost:90/wordpress/category/news/page/2/

The following URL is loading the category-news.php successfully:

http://localhost:90/wordpress/category/news/page/1/

My code of the page category-news.php is as follows...

get_header();
wp_reset_query(); ?>   
<div class="pagewrap post-page-article">
    <?php $count = 0;

    //Added
    $paged = ( get_query_var( \'paged\' ) ) ? get_query_var( \'paged\' ) : 1;
    global $query_string;
    query_posts( $query_string . \'&posts_per_page=2&paged=\' . $paged );
    //--End of addition

    while ( have_posts() ) : the_post();
        $this_page_img = wp_get_attachment_image_src( get_post_thumbnail_id( $post->ID ), \'full\', false );
        $this_page_img = $this_page_img[0];
        $this_page_title = get_the_short_title();
        $this_page_brief = get_the_short_excerpt( 200 );
        $this_page_url = get_the_permalink();
        ?><div class="wide-colum-3">
            <div class="image-side-block">
                <img src="<?php echo $this_page_img; ?>" alt="<?php echo $this_page_title; ?>">
            </div>
            <h3><a href="<?php echo $this_page_url; ?>"><?php echo $this_page_title; ?></a></h3>
            <p><?php echo $this_page_brief; ?></p>
            <div class="clear-fix"></div>
            <hr class="green-bar">
        </div>
    <?php endwhile;

    // next_posts_link() usage with max_num_pages
    next_posts_link( \'Older Entries\', $query->max_num_pages );
    previous_posts_link( \'Newer Entries\' );

    wp_reset_postdata(); ?>    
    <div class="clear-fix">&nbsp;</div>
</div>
<?php get_footer();

add_action( \'pre_get_posts\', function ( $q ) { if ( !is_admin() // Only targets front end && $q->is_main_query() // Targets only the main query && $q->is_category( \'SPECIAL CATEGORY\' ) // Only targets your custom category page, change accordingly ) { $q->set( \'posts_per_page\', 2 ); // Sets 2 posts per page on special category page } });

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