Multi select no adminLte Laravel 5.8

Question

I need to create a multi select on the page and am using the AdminLte, the situation is as follows: A course can have several disciplines (the bank is ready with the right relationships)

<select class="js-example-basic-multiple" name="disciplinas[]" multiple="multiple">
    @foreach($disciplinas as $disciplina)
        <option value="{{ $disciplina->id_disciplina }}">{{ $disciplina->nome }}</option>
    @endforeach
</select>

Just below I put Js

<script>
$('.js-example-basic-multiple').select2({
    placeholder: 'Selecione as disciplinas',
    allowClear: true
});
</script>

It loads as a textarea and does not mount select. It lists subjects in the Loop, but does not let you select more than one option.

I looked at it and it’s loading the CDNS:

cdnjs.cloudflare.com/ajax/libs/select2/4.0.10/js/select2.min.js
cdnjs.cloudflare.com/ajax/libs/select2/4.0.10/css/select2.min.css

My need is as follows: How to properly mount this multi select and how to send to the Controller to save the chosen options.