自定义分类模板上未显示ACF自定义字段

<?php get_header(); ?>

<div id="primary" class="content-area">
    <main id="main" class="site-main">

        <?php if ( have_posts() ) : ?>

            <header class="page-header">
                <?php
                the_archive_title( '<h1 class="page-title">', '</h1>' );
                the_archive_description( '<div class="taxonomy-description">', '</div>' );
                ?>
            </header><!-- .page-header -->

            <?php
            // Start the Loop.
            while ( have_posts() ) :
                the_post();

                // Include the Post-Format-specific template for the content.
                get_template_part( 'content', get_post_format() );

            endwhile;

            // Previous/next page navigation.
            the_posts_pagination(
                array(
                    'prev_text'          => __( 'Previous page', 'twentytwenty' ),
                    'next_text'          => __( 'Next page', 'twentytwenty' ),
                    'before_page_number' => '<span class="meta-nav screen-reader-text">' . __( 'Page', 'twentytwenty' ) . ' </span>',
                )
            );

        else :
            // If no content, include the "No posts found" template.
            get_template_part( 'content', 'none' );

        endif;
        ?>

    </main><!-- #main -->
</div><!-- #primary -->

<?php get_sidebar(); ?>
<?php get_footer(); ?>

<!-- 在分类模板中显示ACF字段 -->
<?php if( function_exists('get_field') ): ?>
    <?php $custom_field = get_field('your_custom_field_name'); ?>
    <?php if($custom_field): ?>
        <p><?php echo esc_html($custom_field); ?></p>
    <?php endif; ?>
<?php endif; ?>