PHP Core Warning – yii\base\ErrorException

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

$_COOKIE = [
    'PHPSESSID' => 'mo61r3srvplradjmsbhn4pv0j1',
    'topics-session' => '1791437376.388.16480.68739|d197bbbd1d400bd72372bc93068ad169',
    '_csrf' => 'ce3c98f5e8d3ed9eda80f3b02113c2e1f5452f36e5bc7c740048e8c24373fb1ba:2:{i:0;s:5:"_csrf";i:1;s:32:"FwnGTHMQSgvSNZUjROwowEPA0V72Zw83";}',
];