PHP Core Warning – yii\base\ErrorException

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

$_COOKIE = [
    'PHPSESSID' => 'vsojcps7usdabm4ski5e7mc037',
    '_csrf' => 'acbded22410f80c9e9e0822fcb597323ffc1add4d6cc8f671194ad03e06b9d49a:2:{i:0;s:5:"_csrf";i:1;s:32:"XdKvqxRHN2iWdGDupH12EfKUCjuiCjfv";}',
    'topics-session' => '1791432551.823.16975.775|d197bbbd1d400bd72372bc93068ad169',
];