google bigquery - Got error whenever trying to get access token from service account

Question

INFO: com.google.api.client.auth.oauth2.TokenResponseException: 400 OK
{
  "error" : "invalid_grant"
}

my code is

GoogleCredential credential = new GoogleCredential.Builder()
            .setTransport(httpTransport)
            .setJsonFactory(js)
            .setServiceAccountId(emailId)
            .setServiceAccountScopes(scopes)
            .setServiceAccountPrivateKeyFromP12File(new File(privateKeyPath)).build();

    System.out.println("SERVICE ACCOUNT SERVLET CALLED");

    credential.refreshToken();

this method is running fine but suddenly it starts to give error.

Answer 1

Waitting for answers