<?php
/**
 * The Template for displaying Post meta categories
 *
 * This template can be overridden by copying it to yourtheme/wp-amp/meta-cats.php.
 *
 * @var $this AMPHTML_Template
 * @version 9.3.0
 */
$categories = get_the_category_list( _x( ', ', 'Used between list items, there is a space after the comma.', 'amp' ) );

if ( $categories ) :
    ?>
    <li class="amphtml-meta-tax-category">
        <span class="screen-reader-text"><?php _e( 'Categories', 'amphtml' ) ?>:</span>
        <?php echo $categories; ?>
    </li>
<?php endif; ?>