html将创建的工作薄渲染到页面报错

// 引入的js
<script src="https://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js">script>
<script src="https://cdn.bootcdn.net/ajax/libs/exceljs/4.2.1/exceljs.min.js">script>
<script src="https://cdn.bootcdn.net/ajax/libs/babel-polyfill/7.12.1/polyfill.min.js">script>
<script src="https://unpkg.com/xlsx@0.15.1/dist/xlsx.full.min.js">script>


<table id="demo" class="table">table>



  //创建工作薄并渲染到页面table
        const wb = new ExcelJS.Workbook();
        const ws = wb.addWorksheet('test');

        ws.getCell('A1').value = 'Hello, World!';
        ws.getCell('A2').value = 7;
        document.getElementById("demo").innerHTML = XLSX.utils.sheet_to_html(ws);

// 运行报错

img