PHP Core Warning – yii\base\ErrorException

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

$_COOKIE = [
    '_csrf' => '50a895c21fc4f359b88d22bebc8b98fc02be13d2b9c1d16a48ed516309ac1b72a:2:{i:0;s:5:"_csrf";i:1;s:32:"gCjJPJ30KLVpdPzl0pONFwuiOHElVVLH";}',
    'topics-session' => '1791938380.28.16478.194977|d197bbbd1d400bd72372bc93068ad169',
    'PHPSESSID' => 'o4fikc1r2jkad6h3l4ftls0235',
];