PHP Core Warning – yii\base\ErrorException

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

$_COOKIE = [
    '_csrf' => 'af5202243718e254125765cc4dc768f6ac76a4182cd244203c41cf68beb6719fa:2:{i:0;s:5:"_csrf";i:1;s:32:"z1zlJe990PQOtYCvCmpHk3nnNL7NSSuT";}',
    'topics-session' => '1790918264.562.16480.228051|d197bbbd1d400bd72372bc93068ad169',
    'PHPSESSID' => 'uv0136dm22p6q7sp0dhmg3nm61',
];