参考错误：未定义el。如何解决这个错误

Question

我有以下代码将一行添加到表（UI）和数据数组

.box-orange {
background-image: url("/img/fundo2.png");
height: 400px;
color: white;
margin-top: 10%;
margin-bottom: 10%;
}
.second-section img {
  height: 550px;
  margin-top: -10%;
  margin-left: 2%;
  object-fit: cover;
}
.second-section h3 {
  font-size: 2.5em;
  margin-bottom: 5%;
}
.second-section.line {
    width: 80%;
    border: 2px solid #77d3c2;
    position: absolute;
    left: 33%;
    top: 100%;
  }

  .second-section p {
  font-size: 1.4em;
  padding: 0% 10%;
}
.textdiv {
  margin-left: 3rem;
}

@media only screen and (max-width: 800px) {
    .second-section img {
      height: unset;
      margin-left:unset;

    }

    .textdiv {
      margin-left:0px;

    }
}

但是，当我尝试实现deleteData时 方法，过滤器功能不起作用，返回错误：“ ReferenceError：未定义el”

const populateData = (device) => {
    document.getElementById("content").insertAdjacentHTML('beforeend',
        <tr class='data' id=${device.tt}>
        <th scope="row">${device.tt}</th>
        <td>${device.ma}</td>
        <td>${device.ten}</td>
        <td>${device.DVT}</td>
        <td>${device.trongLuong}</td>
        <td>
            <button type="button" class="btn btn-danger" onclick='deleteData(this)'>Xóa</button>
            <button type="button" class="btn btn-warning">Sửa</button>
        </td>
    </tr>)
}

const init = () => devices.forEach(device => {
    populateData(device);
});

const addData = () => {
    const maSo = document.getElementById("ma-sp").value;
    const ten = document.getElementById("ten-sp").value;
    const dvt = document.getElementById("dvt").value;
    const trongLuong = document.getElementById("trong-luong").value;
    if (maSo === '' || ten === '' || dvt === '' || trongLuong === '') {
        return;
    }
    const newData = {
        tt: devices.length + 1,
        ma: maSo,
        ten,
        DVT: dvt,
        trongLuong
    }
    devices.push(newData);
    return newData;
};

const addDataUI = () => {
   // add data to table
    const device = addData();
    populateData(device);
    //close modal 
    document.querySelector('.bg-modal').style.display = "none";
};

console.log（devices）代码返回整个数组，而不进行过滤。

我将非常感谢您的帮助