PHP Core Warning – yii\base\ErrorException

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

$_COOKIE = [
    '_csrf' => '10a79d2255a6856ff7a2f62e9b757eef43007c542aa595eb04f3e16f728fbe21a:2:{i:0;s:5:"_csrf";i:1;s:32:"BCy393y8Gyi3F8akiJzDeq40w25MOK4k";}',
    'topics-session' => '1791556855.972.16940.244983|d197bbbd1d400bd72372bc93068ad169',
    'PHPSESSID' => 'v78s5vssa7t8gk0oipcf6jvnq2',
];