PHP Core Warning – yii\base\ErrorException

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

$_COOKIE = [
    'topics-session' => '1791412598.958.16697.259133|d197bbbd1d400bd72372bc93068ad169',
    '_csrf' => '3def723710a5987fc84cfb630431c9b470189f4737eaee4f9592f8d77abdb0f2a:2:{i:0;s:5:"_csrf";i:1;s:32:"ZxC9tWvRrYBs8MuWLVbr0LcII7BE6L3b";}',
    'PHPSESSID' => '37aojagsdnfrq81caecag29742',
];