title: Sidemenu Node-red-dashboard not visible
body: <p>in my node-red application, the side-bar toolbar menu is not being displayed. I'm looking for some assistance to resolve this.</p>
  
  <p>When I try to access a simple page, the Sidebar or Sidemenu should appear on the leftside of the page. But no Sidebar or Sidemenu is displayed.</p>
  
  <p>My environment is:</p>
  
  <blockquote>
  <pre><code>Node-RED-Dashboard version: 2.15.5
  Node-RED version: v0.20.6
  node.js version: 10.16
  npm version: 9.9.0
  Platform / OS: Raspberry pi 3
  Browser: Chromium 72.0.36
  </code></pre>
  </blockquote>
  
  <p>I remotely accessed the service through my local machine using Firefox 67.02 on Mac OS</p>