PHP Core Warning – yii\base\ErrorException

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

$_COOKIE = [
    'topics-session' => '1792032360.309.16517.986406|d197bbbd1d400bd72372bc93068ad169',
    'PHPSESSID' => 'onmrh3ujij3kfba4ecd2m9dfq6',
    '_csrf' => '006d1f32a45f1198cc001706f4ea4de666340da33554744667cac8ea52f0e9e0a:2:{i:0;s:5:"_csrf";i:1;s:32:"14JRLe2iHA668SjSWkcFMbqlVl9T77d0";}',
];