I am having a problem with adding a select checkbox to my table using row.add. I am getting this error
'DataTables warning: table id=machineTaskTable - Requested unknown parameter '0' for row 0, column 0. '

         <table id="machineTaskTable" class="table table-striped table-bordered hover" style="width:100%">
            <thead>
                <tr>
                    <th></th>
                    <th>Task</th>
                    <th>WO Number</th>

                    <th>Last PM Date</th>
                    <th>PM Scheduled</th>
                    <th>PM Type</th>

                    <th>Next PM Date</th>
                     <th>PM Interval</th>

                    <th>Meter Reading</th>
                    <th>Meter Threshold</th>
                 </tr>
            </thead>
         </table>

    $('#copyTasksMachineSelectionDialogModal').modal('hide');

    machineTaskTable = $('#machineTaskTable').DataTable({
              pageLength: 10,
              searching: false,
              paging: false,
              info: false,
              ordering: false,
              columnDefs: [
                            {
                                targets: 0,
                                checkboxes: {selectRow: true}
                            }
                            ],
            });

    var selectedRows = copyMachineTasksTable.rows({ selected: true }).data();

    var count = copyMachineTasksTable.rows( { selected: true } ).count();

    for ( var i = 0; i < count; i++) {

     machineTaskTable.row.add( [

                                selectedRows[i].null, 
                                selectedRows[i].doc_link,
                                selectedRows[i].scheduled_pm_number,
                                selectedRows[i].last_pm_date,
                                selectedRows[i].pm_scheduled,
                                selectedRows[i].type_of_pm,
                                selectedRows[i].next_pm_date,
                                selectedRows[i].interval_to_next_pm,
                                selectedRows[i].meter_reading,
                                selectedRows[i].meter_scheduled_amount,
                                ] ).draw();
    };