hi , am building my project with django framework but i got this problem when i use $('#myModal').modal("show") method , when i open source code it's working but it's showing nothing on my website page , this is the html code

<div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel" aria-hidden="true">
  <div class="modal-dialog" role="document">
    <div class="modal-content">
      <div class="modal-header">
        <h5 class="modal-title" id="exampleModalLabel">Modal title</h5>
        <button type="button" class="close" data-dismiss="modal" aria-label="Close">
          <span aria-hidden="true">×</span>
        </button>
      </div>
      <div class="modal-body">
        Modal body text goes here.
      </div>
      <div class="modal-footer">
        <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
        <button type="button" class="btn btn-primary">Save changes</button>
      </div>
    </div>
  </div>
</div>

this the js code

{% if error_connection == True %}
        <script>
            jQuery.noConflict();
            $('#myModal').modal('show');
            var input_username=document.getElementById('username_input');
            var input_password=document.getElementById('password_input');
            input_username.style.borderColor='Red';
            input_password.style.borderColor='Red';
        </script>
{% endif %}