Why is DateTimePicker not working in yii2?

Question

Yii

Hello, I connect DateTimePicker via composer ( github ).
Further in the form:

<?= DateTimePicker::widget([
        'name' => 'start',
        'options' => ['placeholder' => 'выбери старт время пацан...'],
        'convertFormat' => true,
        'pluginOptions' => [
            'format' => 'dd.MM.yyyy hh:i:s',
            'startDate' => '01-Mar-2014 12:00 AM',
            'todayHighlight' => true
        ]
    ]); ?>

As a result, I get the following:
When pressed, a window with a date and time selection does not appear. You can only enter numbers manually.
What could be the problem? Thank you.

Answer 1

https://developer.mozilla.org/ru/docs/Web/HTML/Ele... possible without YII