{ CredentialsError: Missing credentials in config
    at ClientRequest.<anonymous> (/Volumes/Data/Loint/aws-nodejs-sample/node_modules/aws-sdk/lib/http/node.js:83:34)
    at Object.onceWrapper (events.js:293:19)
    at emitNone (events.js:86:13)
    at ClientRequest.emit (events.js:188:7)
    at Socket.emitTimeout (_http_client.js:679:10)
    at Object.onceWrapper (events.js:293:19)
    at emitNone (events.js:86:13)
    at Socket.emit (events.js:188:7)
    at Socket._onTimeout (net.js:352:8)
    at ontimeout (timers.js:386:14)
  message: 'Missing credentials in config',
  code: 'CredentialsError',
  time: 2017-10-13T10:42:38.188Z,
  retryable: true,
  originalError: 
   { message: 'Could not load credentials from any providers',
     code: 'CredentialsError',
     time: 2017-10-13T10:42:38.188Z,
     retryable: true,
     originalError: 
      { message: 'Missing credentials in config',
        code: 'CredentialsError',
        time: 2017-10-13T10:42:38.178Z,
        retryable: true,
        originalError: [Object] } } }