PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791318534',
];

$_COOKIE = [
    'PHPSESSID' => '2rguof28qv7emkglto6shs20v6',
    'topics-session' => '1792043755.718.16615.185683|d197bbbd1d400bd72372bc93068ad169',
    '_csrf' => '931edb59c0b5ec81aefab9a3c485d9f7b412290de0a0c9bd4d816c0ec9d3e99ca:2:{i:0;s:5:"_csrf";i:1;s:32:"L8OXk8jebUnSdF5xlWezusGdUGid0Z0b";}',
];

$_SESSION = [
    '__flash' => [],
];