I have the version MDB-Pro_4.5.14
I'm trying to place a select, but it does not work, and check the documentation here: https://mdbootstrap.com/docs/jquery/forms/select/
I do not think I'm doing something wrong, I even included the file: js / modules / material-select.js
But nothing, it does not work. I hope you can help me with this problem that apparently has some others in the pro version.
Thanks in advance.

HTML:
<div class="col-lg-6 col-md-6"><label for="dia" id="dia" class="grey-text"><span class="red-text">*</span>Día</label>
<select class="mdb-select md-form" name="dia" required>
<option selected disabled>Elija un dia</option>
<option value="sab">Sábado</option>
<option value="dom">Domingo</option>
</select>
</div>

JS:

<script>
$(document).ready(function() { $('.mdb-select').materialSelect(); });
</script>