PHP Core Warning – yii\base\ErrorException

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

$_COOKIE = [
    'topics-session' => '1791301705.724.16958.197397|d197bbbd1d400bd72372bc93068ad169',
    '_csrf' => '5abf06dd0870ea9940e79ced7aa4ea0d0e5b72a74e5285f8c58d9090855d4f87a:2:{i:0;s:5:"_csrf";i:1;s:32:"sAqhxDf_cgXNEb0k0CzMvZt7gQrfW89C";}',
];