Setting read-only property и Trying to get property of non-object Yii2-в чем ошибка?

Ошибка идет на models а именно :
return $this->getCategori()->one()->Name_janra;

Setting read-only property и Trying to get property of non-object Yii2-в чем ошибка?

Никита:
use yii\helpers\Html;
use yii\widgets\DetailView;

/* var $this yii\web\View */
/* var $model common\models\Cinema */

$this->title = $model->Name;
$this->params['breadcrumbs'][] = ['label' => 'Cinemas', 'url' => ['index']];
$this->params['breadcrumbs'][] = $this->title;
?>

<?= Html::encode($this->title) ?>


<?= Html::a('Update', ['update', 'id' => $model->id_cinema], ['class' => 'btn btn-primary']) ?>
<?= Html::a('Delete', ['delete', 'id' => $model->id_cinema], [
'class' => 'btn btn-danger',
'data' => [
'confirm' => 'Are you sure you want to delete this item?',
'method' => 'post',
],
]) ?>


<?= DetailView::widget([
'model' => $model,
'attributes' => [
'id_cinema',
'Name',
'dlitelnost',
'CategoriName',
'Price',
'Prokatchiki',
],
]) ?>

Setting read-only property и Trying to get property of non-object Yii2-в чем ошибка?

Никита: Извините, но не могли бы подсказать, а что есмь представление?