PHP Core Warning – yii\base\ErrorException

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

$_COOKIE = [
    'topics-session' => '1791429651.793.16814.304829|d197bbbd1d400bd72372bc93068ad169',
    '_csrf' => '2c612ba879d851d2f7028404fe0537899893a562f4d8e80fae6c8161429e65d8a:2:{i:0;s:5:"_csrf";i:1;s:32:"chFvOzuGhgegAsziv8kWjOcr-FLOx_4K";}',
    'PHPSESSID' => '74j1r3ksov36r75563t1430vg4',
];