PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791840647',
];

$_COOKIE = [
    'topics-session' => '1791943752.222.16940.92679|d197bbbd1d400bd72372bc93068ad169',
    'PHPSESSID' => '0eeh8bd6fbv15fcm7tmtoc7852',
    '_csrf' => 'f62251985c453ea023c81be4eb6c745e05ad9588df35fdc1b48374a56c7ba389a:2:{i:0;s:5:"_csrf";i:1;s:32:"dyhRuN24dM8N1z0pNTJUl6SP7UlCTYWV";}',
];

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