html中的表正在呈现一个逗号，没有任何原因，我正在使用nodemailer和smtp谷歌服务器，我觉得这是关于html的东西，但我不能弄清楚

const mailOptions = {
    from: "xyz@gmail.com",
    to: "yzx@gmail.com",
    subject: "Issue Persisting for long time",
    html:
      "<h2>These are the issues persisting for long time</h2><ul> " +
      `<table style="border: 1px solid black;" >
    <thead>
      <tr>
        <th style="border: 1px solid black;">description</th>
        <th style="border: 1px solid black;">department</th>
        <th style="border: 1px solid black;">Location</th>
        <th style="border: 1px solid black;">Date</th>
      </tr>
    </thead>
    <tbody>
      ${data.map((item) => {
        return `
        <tr>
        <td>sdfsdf</td>
        <td>sdfsdf</td>
        <td>sdfsdf</td>
        <td>sdfsdf</td>
        </tr>`
      })}
    </tbody>
  </table>`,
  };
  transporter.sendMail(mailOptions, (error, info) => {
    if (error) {
      res.send(error);
    } else {
      console.log(mailOptions.text);
      res.send("Email sent: " + info.response);
    }
  });