Kartk ExportMenu

Hello,
Impossible for me to set up the grid export function of Kartik. The module is well installed, the kartik\gridView works well, the export menu is also displayed. When I select an export format (whatever) I have the export confirmation pop-in window that appears, but when I click on ok, I return to the homepage of the site, without file generation . There are no errors displayed (including js). My server configuration seems ok, I can write and send a file to the client browser in php (by modifying the content-type header). Below, the ultra minimalist test code on a view file. The features of this module are really great, and I wish it worked…
Thanks
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$query000 = Hotel::find()->where(['pid' => 172]);
$provider000 = new ActiveDataProvider([
    'query' => $query000,
]);
$columnExport = ['etoiles_h'];
echo ExportMenu::widget([
    'dataProvider' => $provider000,
    'columns' => $columnExport,
//    'clearBuffers' => true, //optional
]);


echo \kartik\grid\GridView::widget([
    'dataProvider' => $provider000,
//    'filterModel' => $searchModel,
    'columns' => $columnExport
]);