The error while starting the router in Selenium Grid 4

Grid - router

E:\dev\Selenium Grid 4>java -jar selenium-server-4.0.0-alpha-6.jar router --sessions http://localhost:5556 --distributor http://localhost:5553
Found the option --distributor-host multiple times
Usage: router [options]
  Options:
    --config
      Config file to read from (may be specified more than once)
    --config-help
      Output detailed information about config options
      Default: false
    -d, --distributor, --distributor-host
      Address of the distributor.
    --distributor-port
      Port on which the distributor is listening.
      Default: 0
    --version
      Displays the version and exits.
      Default: false