Yii2 does not find the class and does not define variables, what could be the problem?

Question

Yii

I have a Yii2 project that I'm trying to reproduce locally. I set everything up, when I open the main page of the site it gives out:
Class 'Html' not found
Namespace is registered and working, PHPStorm does not highlight in any way: View code:
use yii\helpers\Html;

<li role="presentation" class="active">
            <?= Html::a(
                Html::tag('span', '', ['class' => 'gticon_palm2']) .
                Html::tag('strong', Yii::t('app', 'Текст')),
                '#tours', [
                    'aria-controls' => 'tours',
                    'role' => 'tab',
                    'data-toggle' => 'tab',
                    'title' => Yii::t('app', 'Текст'),
                    'class' => 'js-typing-update',
                    'data-typing-static' => Yii::t('app', 'Заголовок'),
                    'data-typing-dynamic' => Yii::t('app', 'текст')
                ]
            ) ?>
        </li>

If you write it like this: It
<?= yii\helpers\Html::a(
will work, but it will start swearing at an undeclared variable (which is declared), and so on on all pages.
I thought the problem was in the PHP version, since on the production server PHP5.6, and I have 7.2 on the local, I downgraded to the desired version on the local, but the problem has not changed.
What could be the problem?