I made a Django project and a page has side menu, whenever the side menu is selected a dropdown appears. This is happening when I run it locally, whereas its not working from heroku. The dropdown code is as follows:
<li class="panel panel-default" id="dropdown">
<a data-toggle="collapse" href="#dropdown-lvl4">
<span class="glyphicon glyphicon-menu-down"></span> Day 4 <span class="caret"></span>
</a>
<!-- Dropdown level 1 -->
<div id="dropdown-lvl4" class="panel-collapse collapse">
<div class="panel-body">
<ul class="nav navbar-nav">
<li><a href="/python_course/day4/reg_expressions">Regular Expressions</a></li>
<li><a href="/python_course/day4/data_scraping">Data Scraping</a></li>
</ul>
</div>
</div>
</li>
The website link is here. Kindly help me with this. I an new to heroku and Django.