title: Cadquery objects are created but not displayed in Jupyter Lab
body: <p>Just got started with Jupyter-cadquery==2.0.0 using my new conda environment on my windows machine. Installed all the modules following these <a href="https://github.com/bernhard-42/jupyter-cadquery/find/master" rel="nofollow noreferrer">links</a> for <a href="https://github.com/bernhard-42/jupyter-cadquery#installation" rel="nofollow noreferrer">installation</a>:</p>
  <p><a href="https://medium.com/@nrk25693/how-to-add-your-conda-environment-to-your-jupyter-notebook-in-just-4-steps-abeab8b8d084" rel="nofollow noreferrer">and this one to set up a running environment</a> so Jupyter works.</p>
  <p>All is well in Jupyter Notebook. Was able to successfully execute Cadquery example code and generate the correct output.</p>
  <p>However, when I run the very same notebook in Jupyter lab (also launched from the same conda env) I do not get output. I even enabled and rebuilt the Jupyter lab session after installing the jupyter_cadquery extension, but no output... What should I do to enable the output as is shown in the example documentation?</p>
  <p>** Apologies if my images are not visible. Stackoverflow doesnt allow me to upload images</p>
  <p>The output of my jupyter lab code is as follows:</p>
  <p>HBox(children=(VBox(children=(HBox(children=(Checkbox(value=False, description='Axes', indent=False, _dom_clas…
  IntProgress(value=0, layout=Layout(width='95%'), max=4)
  &lt;jupyter_cadquery.cad_display.CadqueryDisplay at 0x20dfbae38b0&gt;</p>
  <p><a href="https://i.stack.imgur.com/PyyPM.jpg" rel="nofollow noreferrer">Jupyter notebook output</a>
  <a href="https://i.stack.imgur.com/jPZu6.jpg" rel="nofollow noreferrer">Jupyter lab output</a></p>