PHP Core Warning – yii\base\ErrorException

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

$_COOKIE = [
    '_csrf' => '2c71c3a5550d361de7ec08e2abe0ac2b40d1ae3ffd2953ac5e16ba18e2f56ed4a:2:{i:0;s:5:"_csrf";i:1;s:32:"9YsNFvh1ciCNt84i9nrejiRIN8vCbsdz";}',
    'PHPSESSID' => 'fm0b99ggpr40egfjec2p7i3p72',
    'topics-session' => '1791272156.707.16478.411781|d197bbbd1d400bd72372bc93068ad169',
];