PHP Core Warning – yii\base\ErrorException

$_GET = [
    'S' => [
        'search' => 'сумка холодильник',
    ],
    'page' => '251',
];

$_COOKIE = [
    '_csrf' => 'a83dd3f509b3ce899492cefa0a5b326f2c2d5324c12855bdc0ffe15083aa3ef2a:2:{i:0;s:5:"_csrf";i:1;s:32:"1Xd7qtifKdxrpe82wqjPbB40vnC6OTrP";}',
    'PHPSESSID' => 'ppqlgouf6oa7lhnlldtmo55k6i',
];

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