Bootstrap 3 Accordion not working

Question

I have a Bootstrap 3 Collapsable List object but I can't make it work. I am missing something here?

Here is the Bootply link

Answer 1

The bug:

<div id="#ExprExp1" class="panel-collapse collapse in" role="tabpanel" aria-expanded="true">

You left a # in the id. Try it without that. (in the tabpanels only).

The correct version http://www.bootply.com/QgceFfRi5T