events.js:187
      throw er; // Unhandled 'error' event
      ^
TypeError [ERR_INVALID_ARG_TYPE]: The "chunk" argument must be one of type string or Buffer. Received type number
    at validChunk (_stream_writable.js:268:10)
    at Socket.Writable.write (_stream_writable.js:303:21)
    at Object.<anonymous> (/tmp/Answer.js:115:28)
    at Module._compile (internal/modules/cjs/loader.js:956:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:973:10)
    at Module.load (internal/modules/cjs/loader.js:812:32)
    at Function.Module._load (internal/modules/cjs/loader.js:724:14)
    at Function.Module.runMain (internal/modules/cjs/loader.js:1025:10)
    at internal/main/run_main_module.js:17:11
Emitted 'error' event on Socket instance at:
    at errorOrDestroy (internal/streams/destroy.js:108:12)
    at validChunk (_stream_writable.js:271:5)
    at Socket.Writable.write (_stream_writable.js:303:21)
    [... lines matching original stack trace ...]
    at internal/main/run_main_module.js:17:11 {
  code: 'ERR_INVALID_ARG_TYPE'
}