Yii2 删除ActionColumn不需要的标题

我正在使用kartik的ActionColumn，它会创建不需要的headersee my attachement

这个标题没有编码！！ 有没有办法去掉它？ 这是代码

[
    'class' => 'kartik\grid\ActionColumn',
    'dropdown' => false,
    'headerOptions' => ['width' => '80'],
    'vAlign' => 'top',
    'template' => '{rename_folder}<br>{create_folder}',
    'buttons' => [
        'create_folder' => function ($model) {
            $bez = "erzeugen";
            return Html::a('<span class="glyphicon glyphicon-folder-close"></span>', ['/mail/mail-eingang/createfolder', 'bez' => $bez], ['title' => 'Ordner erzeugen', 'data' => ['pjax' => '0']]);
        },
        'rename_folder' => function ($model) {
            $bez = "umbenennen";
            return Html::a('<span class="fa fa-folder-open"></span>', ['/mail/mail-eingang/renamefolder', 'bez' => $bez], ['title' => 'Ordner umbenennen', 'data' => ['pjax' => '0']]);
        },
],

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如果要删除标题，请将其添加到列配置中：

---

'header'=>，

添加完整的gridivew代码我认为它不是来自action列