我试图发送电子邮件使用Firebase云功能从表单提交的数据，它不发送它在所有.
我的函数代码：

const functions = require('firebase-functions');
const admin = require('firebase-admin');
const nodemailer = require('nodemailer');
const cors = require('cors')({
  origin: '*'
})

admin.initializeApp();

/**
 * Here we're using Gmail to send 
 */
let transporter = nodemailer.createTransport({
  service: 'gmail',
  auth: {
    user: 'youremail@gmail.com',
    pass: 'password'
  }
});

exports.sendEmail = functions.https.onCall((contact, context) => {
  cors(req, res, () => {
    const dest = req.body.dest

    console.log(dest)

    const mailOptions = {
      from: `Contact AET  ${contact.email}`,
      to: dest,
      subject: "AET Website Message 👻👻👻👻", // Subject line
      html: `
        <div 
            style="padding: 10px; font-family:Gadaj; border: 2px solid #eee; border-radius: 10px ">
          <p style="font-size: 15px">You have a new message request</p>
            <h2>Contact Details</h2>
            <ul style="list-style-type: none">
               <li>Name: ${contact.name}</li>
               <li>Email: ${contact.email}</li>
            </ul>
            <h2>Message</h2>
            <p style="font-size: 16px;">${contact.message}</p>
            <img src="https://images.prod.meredith.com/product/fc8754735c8a9b4aebb786278e7265a5/1538025388228/l/rick-and-morty-pickle-rick-sticker" />
        </div>
   `
    };

    return transporter.sendMail(mailOptions, (err, info) => {
      if (err) {
        return console.log(err)
      }
      return console.log(`Message sent to ${info.messageId}`)
    })
  })

})

然后我把它连接到我的前端就像这样

sendMessage() {
      if (this.$refs.formEmail.validate()) {
        this.loading = true;
        const createMessage = {
          name: this.name,
          email: this.email,
          message: this.message
        };
        const sendEmail = functions.httpsCallable("sendEmail");
        sendEmail(createMessage)
          .then(res => {
            // eslint-disable-next-line no-console
            console.log(res.data);
          })
          .catch(err => {
            // eslint-disable-next-line no-console
            console.log(err);
          });
      }
    }

我得到这个作为错误：

Error: Error: INTERNAL
    at new HttpsErrorImpl (index.cjs.js?001a:58)
    at _errorForResponse (index.cjs.js?001a:153)
    at Service.eval (index.cjs.js?001a:538)
    at step (tslib.es6.js?9ab4:99)
    at Object.eval [as next] (tslib.es6.js?9ab4:80)
    at fulfilled (tslib.es6.js?9ab4:70)

我该怎么补救呢？