modal jQuery

ane udah bikin modal, ketika tambah data sudah berhasil. tapi ketika edit, malah modalnya enggak nampil... gimana yaa solusinya???

Tombol edit dari tabel

<td><a href="#" class="open_modal" id="<?php echo $data['nik']?>"> Edit
          <span class="fa fa-edit"></span>
          </a>
      </td>

Modal Edit

 <div id="ModalEdit" class="modal fade" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">

       </div>

JS modal Edit

<script type="text/javascript">
           $(document).ready(function () {
           $(".open_modal").click(function(e) {
              var m = $(this).attr("id");
               $.ajax({
                     url: "modal_edit.php",
                     type: "GET",
                     data : {id_data: m,},
                     success: function (ajaxData){
                       $("#ModalEdit").html(ajaxData);
                       $("#ModalEdit").modal('show',{backdrop: 'true'});
                     }
                   });
                });
              });
        </script>

dan ini Modal Editnya

<?php
include "cek-login.php";
include "../config/koneksi.php";?>
<?php

    $id  = $_GET['id'];
    $sql = mysqli_query($conn, "SELECT * FROM penduduk WHERE id='$id'");
    while ($dataDesa= mysqli_fetch_array($sql)){
?>
<div class="modal-dialog">
    <div class="modal-content">

        <div class="modal-header">
            <button type="button" class="close" data-dismiss="modal" aria-hidden="true"></button>
            <h4 class="modal-title" id="myModalLabel">Edit Data Desa XXXX </h4>
        </div>

    <div class="col-md-12">
        <div class="modal-body">
        	<form action="#" name="modal_popup" enctype="multipart/form-data" method="POST">

                <div class="form-group">
                    <label for="nama">Nama Desa</label>
                    <input type="text" class="form-control" id="nama" name="nama" value="<?php echo $dataDesa['nama']; ?>">
                </div>
                <div class="form-group">
                    <label for="nkk">Kode Desa</label>
                    <input type="text" class="form-control" id="kode" placeholder="Nomor Desa" name="nkk" value="<?php echo $dataDesa['code']; ?>">
                </div>
</form>
        </div>
             <?php } ?>
    </div>


    </div>
</div>

tolong pencerahannya teman teman sekalian. udah nyoba diutak atik tapi mentok ga bisa :D