PHP Core Warning – yii\base\ErrorException

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

$_COOKIE = [
    '_csrf' => '81c538bb07474a982ca1f513463a9b2b51d936e0f6ac4674ee2c99241d10e43aa:2:{i:0;s:5:"_csrf";i:1;s:32:"po6P_Ki38hEV4dyUEk4lMTo1fa2OH9OS";}',
    'PHPSESSID' => 'hqemvnqr4b1sr167dtfg8bccl3',
    'topics-session' => '1791377099.067.17008.999055|d197bbbd1d400bd72372bc93068ad169',
];