如何在 DataTable 中添加一行作为最后一行？未捕获的类型错误：无法读取未定义的属性“添加”

如何解决如何在 DataTable 中添加一行作为最后一行？未捕获的类型错误：无法读取未定义的属性“添加”

<table style="width: 100%;" class="table table-hover table-striped table-bordered" id="example3">
...
</table>    

<script type="text/javascript">
    $(document).ready(function() {
        var table=""; 
        setTimeout(function () {

            table=$('#example3').DataTable({
                responsive: true
            });
            
            },2000);

        table.row.add( {
                "Bill Date": "","Name": "","Amount": 40,"Source": "","Destination": "","Project": "","Comments": "","File": "","Created": "","Action": ""
            } ).draw();
        
    });
</script>

我收到错误：Uncaught TypeError: Cannot read property 'add' of undefined，我该如何解决？