PHP Core Warning – yii\base\ErrorException

$_GET = [
    'S' => [
        'search' => 'рюкзак',
    ],
    'page' => '84',
];

$_COOKIE = [
    'PHPSESSID' => '540pekfqcqapf6f2v91ipcsult',
    '_csrf' => '6295797e055561cee68a0dc16c4f1c2fc37944879a9c0b19b2e171c9b6bb6cf8a:2:{i:0;s:5:"_csrf";i:1;s:32:"RgCqW6E06faIIK0q77r9sGJ3CZxycBOX";}',
];

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