Load CSV

[leocharrua]

I have a Yii2 App, with this code:

<?= $form->field($model, 'archivo_entrada_file')->widget(FileInput::class, [            
            'pluginOptions'=>[
                'fileActionSettings' => [
                    'showDrag' => false,
                ],
                'initialPreviewShowDelete' => false,
                'overwriteInitial' => true,
                'allowedFileExtensions'=>['xlsx','xls','csv'],
                'dropZoneEnabled' => true,
                'showUpload' => false,
                'removeClass' => 'btn btn-danger',
                'showCancel' => false,
                'showMove' => false,
                'showCaption' => false,
                'browseLabel' =>  Yii::t('app','Seleccionar Archivo'),
            ]
    ]); ?>

The widget works ok with "xls" and "xlsx" files, but when I try to load a "csv" file, after de file is loaded, the windows "save as" dialog appears. I don't have any in the code for that happening.

Can you help me?
Thanks