PHP Core Warning – yii\base\ErrorException

$_GET = [
    'S' => [
        'search' => 'сумка холодильник',
    ],
    'page' => '58',
];

$_COOKIE = [
    'PHPSESSID' => '1qmi5s7891muple5ak1abshqet',
    '_csrf' => 'd82b2cc95c8c75c263d0ebf96307cfd664eddcf16e5f653435448f24946be69da:2:{i:0;s:5:"_csrf";i:1;s:32:"t1FMkcdE3M5lpTuK75aGbGwCaPyFaTzU";}',
];

$_SESSION = [
    '__flash' => [],
];