WordPress update_comment_meta onclick not working with Ajax

I’m attempting to update_comment_meta via Ajax call in WordPress,
but no data is returned and the comment_meta field is not being updated.

Fun.php

add_action( 'wp_enqueue_scripts', 'comment_voting_enqueue_scripts' );
function comment_voting_enqueue_scripts() {
  wp_enqueue_script( 'comment_meta_voting-js', get_template_directory_uri() . '/js/ajax-vote.js', array( 'jquery' ), '0.5', false );
  wp_localize_script( 'comment_meta_voting-js', 'commentMetaVoting', array(
    'ajaxurl' => admin_url( 'admin-ajax.php' ),
  ) );
}
add_action( 'wp_ajax_nopriv_comment_meta_voting', 'comment_meta_voting' );
add_action( 'wp_ajax_comment_meta_voting', 'comment_meta_voting' );

function comment_meta_voting() {
    $comment_id = $_POST['vote'];
    $vote_total = get_comment_meta($comment_id , 'vote', true);
    ++$vote_total;
    update_comment_meta($comment_id , 'vote', $vote_score );
    die();
}

ajax-vote.js

(function($) {
    'use strict';
    $(document).on('click', '.sl-button', function() {
        var button = $(this);
        var cmnt_id = button.attr('data-post-id');
        var security = button.attr('data-nonce');

            $.ajax({
                type: 'POST',
                url: commentMetaVoting.ajaxurl,
                data : {
                    action : 'comment_meta_voting',
                    post_id : cmnt_id,
                    nonce : security,
                },
                success: function(response){
                    console.log('tst');
                }
            });

        return false;
    });
})(jQuery);

and in wp_list_comments callback i add core function where i want to show the link to call:

     <a href="<?php echo admin_url( 'admin-ajax.php?action=comment_meta_voting' . '&cmnt_id=' . $commentid . '&nonce=' . $nonce ); ?>" class="sl-button" data-nonce="<?php echo $commentid ; ?>" data-post-id="<?php echo $commentid ; ?> ">click</a>

Finally i get console.log(‘tst’); in thee console.. so i think its correct, no data is returned and the comment_meta field is not being updated..

any help?