some fix

kernel/modules/user/views/form.php

@@ -6,7 +6,7 @@
 use kernel\modules\user\models\User;
 
 $form = new \itguild\forms\ActiveForm();
-$form->beginForm(isset($model) ? "/admin/user/edit/" . $model->id : "/admin/user");
+$form->beginForm(isset($model) ? "/admin/user/edit/" . $model->id : "/admin/user", enctype: 'multipart/form-data');
 
 $form->field(class: \itguild\forms\inputs\TextInput::class, name: "username", params: [
     'class' => "form-control",