comment system is not working!

i have this code in a page called "index.php"

<?php
 $phpns['category'] = '33';
 $phpns['limit'] = '200';
 $phpns['template'] = '9';
 $phpns['order'] = 'asc';
 $phpns['items_per_page'] = '3';
    $phpns['disable_pagination'] = true;
 include("/Applications/XAMPP/xamppfiles/htdocs/phpns/shownews.php");
?>

it shows correctly. but whenever i try adding comment, it keeps giving me this error although i have completely filled the form correctly.

"You need to enter all required fields, and a valid email. Press back to try again."