PHP Core Warning – yii\base\ErrorException

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

$_COOKIE = [
    'topics-session' => '1791248658.127.16478.549777|d197bbbd1d400bd72372bc93068ad169',
    'PHPSESSID' => 'bi6e3nd80dlt882safu3a55vl7',
    '_csrf' => '9bc39b5b439481fdd74445402e12552bf469eaa89bd6965e0985626498d564dda:2:{i:0;s:5:"_csrf";i:1;s:32:"Ue1yvTUOOiWhv7OBaUz25jyObpz-TX_d";}',
];