Last upaded post KB not working anymore

Hi,

this KB is not working anymore.
The new single.php :
<?php
/**
* The template for displaying all single posts and attachments.
*
* @package Hestia
* @since Hestia 1.0
*/

get_header();

do_action( ‘hestia_before_single_post_wrapper’ );
?>

<div class=”<?php echo hestia_layout(); ?>”>
<div class=”blog-post blog-post-wrapper”>
<div class=”container”>
<?php
if ( have_posts() ) :
while ( have_posts() ) :
the_post();
get_template_part( ‘template-parts/content’, ‘single’ );
endwhile;
else :
get_template_part( ‘template-parts/content’, ‘none’ );
endif;
?>
</div>
</div>
</div>

<?php
if ( ! is_singular( ‘elementor_library’ ) ) {
do_action( ‘hestia_blog_related_posts’ );
}
?>
<div class=”footer-wrapper”>
<?php get_footer(); ?>

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