title: Jupyter Lab - dask-labextension not working
body: <p>Jupyter Lab <a href="https://github.com/dask/dask-labextension" rel="noreferrer">dask-labextension</a> not working</p>
  <p><strong>Installed</strong> both from:</p>
  <ul>
  <li>A.) JupyterLab side bar/ Extension manager/ search for it / click install</li>
  <li>B.) Command line rom my cd to anaconda <a href="https://github.com/dask/dask-labextension" rel="noreferrer">installation guide</a></li>
  </ul>
  <pre><code>conda install jupyterlab nodejs
  conda install -c conda-forge dask-labextension
  jupyter labextension install dask-labextension
  jupyter serverextension enable dask_labextension
  </code></pre>
  <p><strong>ERROR</strong></p>
  <ul>
  <li>In juyerlab start up pop up error message - <code>ERROR: &quot;Dask Server Error Failed to list clusters: might the server extension not be installed/enabled?&quot;</code></li>
  <li>Than if I wait it offers me to make a build -&gt; I click <code>build</code></li>
  <li><code>Build CompleteBuild successfully completed, reload page?</code> click -&gt; <code>reload</code></li>
  </ul>
  <p><strong>Question</strong></p>
  <ul>
  <li>I have Token password locked my JupyterLab can that be the reason that this extension can not access it?</li>
  </ul>
  <p><strong>Tried Solutions</strong></p>
  <ul>
  <li>Deleting extension from JupyterLab side bar/ Extension manager
  <ul>
  <li><code>WARNING The JupyterLab development team is excited to have a robust third-party extension community. However, we do not review third-party extensions, and some extensions may introduce security risks or contain malicious code that runs on your machine.</code></li>
  <li><code>Error communicating with server extension. Consult the documentation for how to ensure that it is enabled. Reason given: Error: 403 (Forbidden)</code></li>
  </ul>
  </li>
  <li>I have node js installed - <a href="https://stackoverflow.com/a/55450973/10270590">https://stackoverflow.com/a/55450973/10270590</a></li>
  </ul>