Plugin "WP-PostRatings" Not working properly

Good Day,

I have installed your plugin and input the php code in single.php in my theme:

<?php if(function_exists(‘the_ratings’)) { the_ratings(); } ?>

after

<?php while ( have_posts() ) : the_post(); ?>

so when I visit a post, the five stars appear and when I rate, a message (…Loading) appear for seconds and then it disappears and nothing happens and it does not register it in the control panel!

Any thoughts please?

https://www.ads-software.com/plugins/wp-postratings/