Error on javascript console: $(...).sortable is not a function

[lyricnz]

jquery.min.js:2 jQuery.Deferred exception: $(...).sortable is not a function TypeError: $(...).sortable is not a function
    at HTMLDocument.<anonymous> (https://heimdalldashboard:7990/js/app.js?id=5446aeb4aa754e641c77:633:18)
    at e (https://heimdalldashboard:7990/js/jquery.min.js:2:30310)
    at t (https://heimdalldashboard:7990/js/jquery.min.js:2:30612) undefined

[lyricnz]

The code in js/app.js like 633 is the first line of below.

  $('#sortable').sortable({
    stop: function stop(event, ui) {
      var idsInOrder = $('#sortable').sortable('toArray', {
        attribute: 'data-id'
      });
      $.post(base + 'order', {
        order: idsInOrder
      });
    }
  });

[lyricnz]

This is 2.6.1 btw

[lyricnz]

It looks like "sortable" is part of jquery-ui not jquery?
https://jqueryui.com/sortable/

Certainly adding the middle line below to ./resources/views/layouts/app.blade.php seems to have fixed the specific issue

        <script src="{{ asset('js/jquery.min.js') }}"></script>
        <script src="{{ asset('js/jquery-ui.min.js') }}"></script>
        <script src="{{ asset(mix('js/app.js')) }}"></script>

[LinuxServer-CI]

This issue has been automatically marked as stale because it has not had recent activity. This might be due to missing feedback from OP. It will be closed if no further activity occurs. Thank you for your contributions.