title: Problem opening Jupiter "lab" (not Jupiter notebook) specifically with the Opera browser parameter macOS
body: <p>Does anybody know how to successfully pass &quot;Opera&quot; parameter/argument when opening Jupyter Lab from macOS Terminal?</p>
  <pre><code>jupyter lab --browser=opera
  </code></pre>
  <p>I tried the above command and the output throws an error saying it could not find a web browser. If I use &quot;jupyter lab --browser=safari&quot; it works just fine.</p>
  <p>Also, respectfully I am not interested in the other workaround to use c.NotebookApp.browser in the --generate-config as I've spent hours on that possible solution and it is not working with Opera no matter how I slice it (see my comment here: <a href="https://stackoverflow.com/questions/66117095/open-jupyter-notebooks-with-opera-on-mac/69917891#69917891">Open Jupyter Notebooks with Opera on Mac</a>)</p>