GridView column link 缺失参数 [ 2.0 版本 ]

视图代码如下：

  <?= GridView::widget([
        'tableOptions'=>['class'=>'table table-striped table-hover'],
        'dataProvider' => $dataProvider,
        'columns' => [
            ['class' => 'yii\grid\SerialColumn',
                'header' => '序号'],

            'icontitle',    
 
            ['class' => 'yii\grid\ActionColumn'],
        ],
    ]); ?>

点击列头sort，提示参数缺失