Doesn't work with Bootstrap4

[mtskf]

[chandanch]

Hello I had the same issue too, I added the

<script type="text/javascript" src="/path/to/moment.js"></script>
<script type="text/javascript" src="/path/to/bootstrap/js/transition.js"></script>
<script type="text/javascript" src="/path/to/bootstrap/js/collapse.js"></script>

Its working for me now