The file or directory to be published does not exist /vendor\bower/jquery-ui

I’m installing DatePicker.

  1. Copied all files under vendor/yiisoft/yii2-jui

  2. Added into extensions.php


'yiisoft/yii2-jui' => 

  array (

    'name' => 'yiisoft/yii2-jui',

    'version' => '2.0.4',

    'alias' => 

    array (

      '@yii/jui' => $vendorDir . '/yiisoft/yii2-jui',

    ),

  ),

Now when i try


<?= $form->field($model, 'date')->widget(\yii\jui\DatePicker::classname(), [

    //'language' => 'pl',

    //'dateFormat' => 'yyyy-MM-dd',

    ]) ?>

I get this error:

The file or directory to be published does not exist: D:\_xampp7\htdocs\szkolenia/vendor\bower/jquery-ui

First thing that strikes is that slashes are mixed with backslashes. Where can i fix it?

Now i don’t want to use composer.

I tried it on Windows but don’t understand what it does except problems and i’m going to move my app between systems (probably linux and freebsd) and i dont want to install composer every time.