Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/root/plot_manager/drive_manager.py", line 404, in send_daily_email
    send_daily_update_email()
  File "/root/plot_manager/drive_manager.py", line 317, in send_daily_update_email
    drive_serial_number=Device(get_device_by_mountpoint(get_plot_drive_to_use())[0][1]).serial,
  File "/usr/local/lib/python3.8/dist-packages/pySMART/device.py", line 222, in __init__
    cmd = Popen(
  File "/usr/local/lib/python3.8/dist-packages/sentry_sdk/integrations/stdlib.py", line 193, in sentry_patched_popen_init
    rv = old_popen_init(self, *a, **kw)  # type: ignore
  File "/usr/lib/python3.8/subprocess.py", line 854, in __init__
    self._execute_child(args, executable, preexec_fn, close_fds,
  File "/usr/lib/python3.8/subprocess.py", line 1583, in _execute_child
    and os.path.dirname(executable)
  File "/usr/lib/python3.8/posixpath.py", line 152, in dirname
    p = os.fspath(p)
TypeError: expected str, bytes or os.PathLike object, not NoneType