Categories are not displayed.

When using a post_type category, these are not shown.

That is, only shows the normal post.

<?php get_header(); ?>

<div id="content">
  <?php if (have_posts()) : ?>
  <?php if (is_category()) { ?>
  <p class="browse">Estás en: Inicio // <?php single_cat_title(); ?></p>
  <?php } elseif (is_author()) { ?>
  <p class="browse">Archivos del autor</p>
  <?php } elseif (isset($_GET['paged']) && !empty($_GET['paged'])) { ?>
  <p class="browse">Archivos del blog</p>
  <?php } ?>
  <?php while (have_posts()) : the_post(); ?>

<div id="post">
<span class="categorias">
<?php
foreach((get_the_category()) as $category) {
    echo '<li class="cat-item-' .$category->term_id. '"><a href="'.get_category_link($category->term_id ).'">' . $category->cat_name . '</a></li>';
}
?>
</span><span class="date"><?php the_time('d/m/Y') ?></span>
<div id="title"><a href="<?php the_permalink() ?>" rel="bookmark" title="Visitar <?php the_title_attribute(); ?>"><?php the_title(); ?></a></div>
<div id="postcontent"><a href="<?php the_permalink() ?>"><?php the_post_thumbnail( 'thumbnail' ); ?></a><?php the_excerpt() ?></div>
<div class="clear"></div>
</div>

  <?php endwhile; ?>
  <div class="clear"></div>
  <div id="navigation">
	<div class="previous"><?php previous_posts_link( __( 'Anterior' ) ); ?><div class="clear"></div></div>
        <div class="next"><?php next_posts_link( __( 'Siguiente' ) ); ?><div class="clear"></div></div>
  </div>
  <?php else : ?>
  <?php endif; ?>
</div>

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