PHP Core Warning – yii\base\ErrorException

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

$_COOKIE = [
    'PHPSESSID' => 'qktr82f2gsk1vt16as1b4n6ih6',
    'topics-session' => '1791126413.085.16475.651401|d197bbbd1d400bd72372bc93068ad169',
    '_csrf' => 'c3af118a21c3ad3652474886cd205c3021276d43b69c4aa648164d1842d9278ca:2:{i:0;s:5:"_csrf";i:1;s:32:"dxBaQumXlRRj0vh59KlCevHDud1xnq8T";}',
];