Throws error when calling reggie-server -h

[byteshiva]

Throws error when calling reggie-server -h

(node:12440) fs: re-evaluating native module sources is not supported. If you are using the graceful-fs module, please update it to a more recent version.
dns.js:115
    throw new TypeError('Invalid arguments: ' +
    ^

TypeError: Invalid arguments: hostname must be a string or falsey
    at Object.lookup (dns.js:115:11)
    at listenAfterLookup (net.js:1394:20)
    at Server.listen (net.js:1390:5)
    at Server.listen (/home/xyz/.nvm/versions/node/v6.3.0/lib/node_modules/reggie/node_modules/restify/lib/server.js:305:36)
    at Object.<anonymous> (/home/xyz/.nvm/versions/node/v6.3.0/lib/node_modules/reggie/server.js:330:8)
    at Module._compile (module.js:541:32)
    at Object.Module._extensions..js (module.js:550:10)
    at Module.load (module.js:458:32)
    at tryModuleLoad (module.js:417:12)
    at Function.Module._load (module.js:409:3)