PHP Core Warning – yii\base\ErrorException

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

$_COOKIE = [
    '_csrf' => 'a590a3cf8febe85dbc70e849c09376611d31547b4670de8151fe6ea852f27c2da:2:{i:0;s:5:"_csrf";i:1;s:32:"Khr21_iTwDm8bst-I-Iu8DqJdyR-n5CB";}',
    'PHPSESSID' => 'f6ilojslfscb1qghon9cmjdcn7',
    'topics-session' => '1791575464.679.16517.31977|d197bbbd1d400bd72372bc93068ad169',
];