title: Error when executing `jupyter notebook` (No such file or directory)
body: <p>When I execute <code>jupyter notebook</code> in my virtual environment in Arch Linux, the following error occurred.</p>
  <p><code>Error executing Jupyter command 'notebook': [Errno 2] No such file or directory</code></p>
  <p>My Python version is 3.6, and my Jupyter version is 4.3.0</p>
  <p>How can I resolve this issue?</p>