Auth error:Error: invalid_grant on windows 7

[svsh227]

I am using @google-cloud/speech but while doing node app.js I am getting Auth error: Error: invalid_grant.
I am searching on google but I couldn't get my solutions. Please tell me how to remove this error.
My code is:

const Speech = require('@google-cloud/speech')({
  projectId: 'natural-numbus-123456789',
  keyFilename: './myman-123456789.json'
});
process.env.GOOGLE_APPLICATION_CREDENTIALS = './myman-123456789.json'
const projectId = 'natural-numbus-123456789';
const fileName = "gs://cloud-samples-tests/myman/brooklyn.flac";
const options = {
  encoding: 'FLAC',
  sampleRateHertz: 16000,
  languageCode: 'en-US'
};
Speech.recognize(fileName, options)
  .then((results) => {
    console.log(results);
    const transcription = results[0];
    console.log(`Transcription: ${transcription}`);
  })
  .catch((err) => {
    console.error('ERROR:', err);
  });

On linux its working fine. But on windows i got error.

[stephenplusplus]

The invalid_grant error is a notoriously difficult one to debug. I would try removing these lines:

process.env.GOOGLE_APPLICATION_CREDENTIALS = './myman-123456789.json'
const projectId = 'natural-numbus-123456789';

By providing those paths during the Speech instantiation, the API client has all it needs.

As far as it working on Windows and not Linux, that is hard for me to come up with an explanation. Is there anything unique/worth mentioning about how you are running the program? Are you running parallel processes, local systems, containers? Also, please list the versions of the environment (OS, Node.js, npm, @google-cloud/storage).

[stephenplusplus]

@svsh227 Please let me know if you are still having problems getting this working.