Custom Query Vars + Mindbreeze Pagination

search.php

<?php function mindbreeze_query_vars_filter($vars) {
  $vars[] = 'q';
  return $vars;
}
add_filter( 'query_vars', 'mindbreeze_query_vars_filter' );

// pagination
$page = get_query_var( 'page', 1 );
$site_path = site_url('/search');
if ($body->resultset->prev_avail) :
  $newPage = $page - 1 ;
  $params = array('q' => $query, 'page' => $newPage);?>
  
<p><a href="<?php echo add_query_arg($params, $site_path);?>">PREV</a></p>

<?php elseif ($body->resultset->next_avail) :
  $newPage = $page + 1 ;
  $params = array('q' => $query, 'page' => $newPage);?>
  
<p><a href="<?php echo add_query_arg($params, $site_path);?>">NEXT</a></p>

<?php endif;?>