PHP Core Warning – yii\base\ErrorException

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

$_COOKIE = [
    '_csrf' => '07b09e6ee6bd9dcf2700f48ae5b09cc0ef28396240a45adf6025c40c6f0f2490a:2:{i:0;s:5:"_csrf";i:1;s:32:"Z6_NjoVDT9GLrXwV6VDXKlhhkfE0rpJA";}',
    'PHPSESSID' => '1ff6u43n8erbfuiqdjhphgn734',
    'topics-session' => '1791410947.367.16975.573539|d197bbbd1d400bd72372bc93068ad169',
];