无法使用MailGun节点API发送电子邮件

这是我正在使用的代码。。。

const mailgun = require('mailgun-js')({
  apiKey: 'XXXXXXXXXX', 
  domain: 'https://api.mailgun.net/v3/XXXXXXXXX'
})

async function sendInvite() { 
  var email = process.argv[process.argv.length - 1]

  const data = {
    from: 'support@acme.com',
    to: email,
    subject: 'Welcome!',
    html: '<p>Welcome!</p><p>You are very special!</p>'
  }

  return new Promise((resolve, reject) => {
    mailgun.messages().send(data, (error, body) => {
      if (error) {
        console.error(error)
        reject(error)
        return
      }
      console.log(`Invite sent to ${email}`)
      console.log(data)
      console.log(body)
      resolve();
    })
  })

}

sendInvite().then(() => console.log('Done')).catch((err) => console.error(err))