Error on running command to discover the device

[pax0707]

Microsoft Windows [Version 10.0.16299.309]
(c) 2017 Microsoft Corporation. All rights reserved.

C:\Users\pax07>miio --discover --sync
index.js <command>

Commands:
  index.js configure <idOrIp>               Control a device by invoking the
                                            given method
  index.js control <idOrIp> <method>        Control a device by invoking the
  [params..]                                given method
  index.js discover                         Discover devices on the local
                                            network
  index.js inspect <idOrIp>                 Inspect a device
  index.js protocol <command>               Inspect and test raw miIO-commands
  index.js tokens <command>                 Manage tokens of devices

Options:
  --help     Show help                                                 [boolean]
  --version  Show version number                                       [boolean]

Not enough non-option arguments: got 0, need at least 1

C:\Users\pax07>

[roboterm]

Try miio discover