PHP Core Warning – yii\base\ErrorException

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

$_COOKIE = [
    'PHPSESSID' => 'bhcer3gevb30r9hjvo6167e164',
    'topics-session' => '1792030618.401.16478.666553|d197bbbd1d400bd72372bc93068ad169',
    '_csrf' => '33d188e7a1b3bf9cbe9b11f5b126dc15d9062b23f622227daad116e819cbc47aa:2:{i:0;s:5:"_csrf";i:1;s:32:"HJs1GLMhv7Ulnajzdv9a-NQIv-ubc693";}',
];