Follow the instruction properly then u get the coding right

log into your cPanel > File manager so
as to edit the core single.php file of your carrington theme.

1. Login to cPanel > Filemanger then follow the path public_html/your site name/wp-content/themes/carrington-mobile-1.2.

2. In this directory, you’ll see all the theme files, right click on the single.php file and click on Edit.

3. Once the page loads to edit,
Search using CTRL F for

cfct_content();

and in the line after the code
paste the below code.

PHP Code:

<?php 

?>

<?php

//for use in the loop, list 5 post titles related to first tag on current post

$tags = wp_get_post_tags($post-

>ID);

if ($tags) {

echo 'Related Posts';

$first_tag = $tags[0]->term_id; $args=array(

'tag__in' => array($first_tag),

'post__not_in' => array($post-

>ID),

'showposts'=>5,

'caller_get_posts'=>1 );

$my_query = new WP_Query

($args);

if( $my_query->have_posts() ) {

while ($my_query->have_posts()) :

$my_query->the_post(); ?> <p><a href="<?php

the_permalink() ?>"

rel="bookmark" title="Permanent

Link to <?php the_title_attribute

(); ?>"><?php the_title(); ?></

a></p> <?php

endwhile;

}

}

?> ?>

4. Then Click on Save at the top
right corner of the screen.
Copy with quote.
Drop any problem you encounter here.