I get a error "{ Error: Invalid login: 535-5.7.8 Username and Password not accepted." when I try send a mail with the module nodemailer from Node JS

root@me:/home/memee/Desktop/test/NodeJS/mail# nano example.js
root@me:/home/memee/Desktop/test/NodeJS/mail# node example.js
{ Error: Invalid login: 535-5.7.8 Username and Password not accepted. Learn more at
535 5.7.8  https://support.google.com/mail/?p=BadCredentials 77-v6sm41437784pga.40 - gsmtp
    at SMTPConnection._formatError (/home/memee/Desktop/test/NodeJS/mail/node_modules/nodemailer/lib/smtp-connection/index.js:606:19)
    at SMTPConnection._actionAUTHComplete (/home/memee/Desktop/test/NodeJS/mail/node_modules/nodemailer/lib/smtp-connection/index.js:1335:34)
    at SMTPConnection._responseActions.push.str (/home/memee/Desktop/test/NodeJS/mail/node_modules/nodemailer/lib/smtp-connection/index.js:366:26)
    at SMTPConnection._processResponse (/home/memee/Desktop/test/NodeJS/mail/node_modules/nodemailer/lib/smtp-connection/index.js:762:20)
    at SMTPConnection._onData (/home/memee/Desktop/test/NodeJS/mail/node_modules/nodemailer/lib/smtp-connection/index.js:558:14)
    at TLSSocket._socket.on.chunk (/home/memee/Desktop/test/NodeJS/mail/node_modules/nodemailer/lib/smtp-connection/index.js:510:47)
    at emitOne (events.js:116:13)
    at TLSSocket.emit (events.js:211:7)
    at addChunk (_stream_readable.js:263:12)
    at readableAddChunk (_stream_readable.js:250:11)
  code: 'EAUTH',
  response: '535-5.7.8 Username and Password not accepted. Learn more at\n535 5.7.8  https://support.google.com/mail/?p=BadCredentials 77-v6sm41437784pga.40 - gsmtp',
  responseCode: 535,
  command: 'AUTH PLAIN' }

var nodemailer = require('nodemailer');

var transporter = nodemailer.createTransport({
  service: 'gmail',
  auth: {
    user: 'example@gmail.com',
    pass: 'here I put my password'
  }
});

var mailOptions = {
  from: 'from@gmail.com',
  to: 'to@gmail.com',
  subject: 'Sending Email using Node.js',
  text: 'That was easy!'
};

transporter.sendMail(mailOptions, function(error, info){
  if (error) {
    console.log(error);
  } else {
    console.log('Email sent: ' + info.response);
  }
});

root@me:~# node --version
v8.11.3
root@me:~# npm --v
6.1.0
root@me:~#