PHP Core Warning – yii\base\ErrorException

$_GET = [
    'S' => [
        'search' => 'сумка холодильник',
    ],
    'page' => '69',
];

$_COOKIE = [
    '_csrf' => '878f1f3447bf2e57169d47ec3c6b624e144956868d95254ed01322faf72cff52a:2:{i:0;s:5:"_csrf";i:1;s:32:"j9tL0V2QxxqXM3DPKQShz1OElfF0YOJ3";}',
    'PHPSESSID' => 'kdkcpa94morposfaka6n7qttal',
];

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