PHP Core Warning – yii\base\ErrorException

$_GET = [
    'redirect_url' => '/yjds2016/cases/match',
];

$_COOKIE = [
    'topics-session' => '1791267113.412.16940.581727|d197bbbd1d400bd72372bc93068ad169',
    '_csrf' => '80095c5817e9db61c17beed3b8af4a24a21baf3e95ce05d8238f774e5b3232fda:2:{i:0;s:5:"_csrf";i:1;s:32:"f76d6SB4UswNCxn-6bpLI51TQ6enN6L9";}',
    'PHPSESSID' => 'mno57n3qsjfjmc3lnuvi9il7m6',
];