Plugin Crashes the footer bar

Hi,
The plugin is crashing my theme footer,
Is there a problem in single.php

[ `<?php
defined( ‘ABSPATH’ ) or die();

?>
<?php get_header() ?>
<?php if ( have_posts() ): ?>
<div class=”single_content”>
<?php while ( have_posts() ): the_post(); ?>
<?php get_template_part( ‘tmpl/post/content’, ‘single’ ) ?>
<?php endwhile ?>

<?php get_template_part( ‘tmpl/post/content-navigator’ ) ?>

<?php shella__comments_list() ?>
</div>

<?php endif ?>
<?php get_footer() ?>` ]

Or

Is it an error on plugin.

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