antshop/kcadmin/views/layouts/breadcrumb.php

<?PHP

use yii\widgets\Breadcrumbs;
?>
<?php if (!empty($this->title)): ?>
    <h1><?= $this->title ?><?php if (isset($this->params['subtitle'])): ?><small><?= $this->params['subtitle'] ?></small><?php endif ?></h1>
<?php endif ?>
<?php
echo Breadcrumbs::widget([
    'tag' => 'ol',
    'links' => isset($this->params['breadcrumbs']) ? $this->params['breadcrumbs'] : [],
]);
?>