title: Jupyter Notebook/Lab Not Launching
body: <p>I am getting white screen in Jupyter Lab and a Black screen in Jupyter Notebook.
  It is same either I launch from comand line or navigator.</p>
  
  <pre><code>(base) C:\Users\Satish&gt;jupyter lab
  [I 17:21:33.289 LabApp] JupyterLab extension loaded from 
  C:\ProgramData\Anaconda3\lib\site-packages\jupyterlab
  [I 17:21:33.289 LabApp] JupyterLab application directory is 
  C:\ProgramData\Anaconda3\share\jupyter\lab
  [W 17:21:33.289 LabApp] JupyterLab server extension not enabled, manually loading...
  [I 17:21:33.289 LabApp] JupyterLab extension loaded from 
  C:\ProgramData\Anaconda3\lib\site-packages\jupyterlab
  [I 17:21:33.289 LabApp] JupyterLab application directory is 
  C:\ProgramData\Anaconda3\share\jupyter\lab
  [I 17:21:33.289 LabApp] Serving notebooks from local directory: C:\Users\Satish
  [I 17:21:33.289 LabApp] The Jupyter Notebook is running at:
  [I 17:21:33.289 LabApp] http://localhost:8888/? 
  token=b270fb632dd40eecd4f2d4bf150476cc9eaa5b514a20ac04
  [I 17:21:33.289 LabApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).
  [C 17:21:33.351 LabApp]
  
  To access the notebook, open this file in a browser:
      file:///C:/Users/Satish/AppData/Roaming/jupyter/runtime/nbserver-7396-open.html
  Or copy and paste one of these URLs:
      http://localhost:8888/?token=b270fb632dd40eecd4f2d4bf150476cc9eaa5b514a20ac04
  </code></pre>
  
  <p>This started happening after I pip install jupytertheam
  I removed it and reinstalled conda, still this issue persists. </p>