title: bootstrap.min.js:6 Uncaught Error: Bootstrap dropdown require Popper.js
body: <p>Suddenly I started to get error when I try to open my dropdown menu :</p>
  
  <pre><code> bootstrap.min.js:6 Uncaught Error: Bootstrap dropdown require Popper.js (https://popper.js.org)
          at bootstrap.min.js:6
          at bootstrap.min.js:6
          at bootstrap.min.js:6
  </code></pre>
  
  <p>I am using standard bootstrap file</p>
  
  <blockquote>
    <p><code>&lt;script src="https://getbootstrap.com/dist/js/bootstrap.min.js"&gt;</code></p>
  </blockquote>
  
  <p>Anything changed in bootstrap I have to take care off?</p>
  
  <p>Order I am loading files is following</p>
  
  <pre><code>&lt;script src="https://code.jquery.com/jquery-1.9.1.js"&gt;&lt;/script&gt;
  &lt;script src="{{ STATIC_URL }}/static/jquery/jquery-1.9.1.js"&gt;&lt;/script&gt;
  &lt;script src="https://code.jquery.com/ui/1.11.4/jquery-ui.js"&gt;&lt;/script&gt;
  &lt;script src="{{ STATIC_URL }}/static/jquery/jquery-ui.js"&gt;&lt;/script&gt;
  
  
  
  
  &lt;script src="https://getbootstrap.com/dist/js/bootstrap.min.js"&gt;&lt;/script&gt;
  &lt;!-- Just to make our placeholder images work. Don't actually copy the next line! --&gt;
  &lt;script src="https://getbootstrap.com/assets/js/vendor/holder.min.js"&gt;&lt;/script&gt;
  &lt;!-- IE10 viewport hack for Surface/desktop Windows 8 bug --&gt;
  &lt;script src="https://getbootstrap.com/assets/js/ie10-viewport-bug-workaround.js"&gt;&lt;/script&gt;
  </code></pre>