PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791919587',
];

$_COOKIE = [
    'topics-session' => '1791933792.621.16517.168174|d197bbbd1d400bd72372bc93068ad169',
    'PHPSESSID' => 'q9bj5ts4og0v8g052be5ntn1d0',
    '_csrf' => 'd14aa721cf314796d165d5f78256fcd4d1d382dfef9bcb418b9e4a095735cf1ca:2:{i:0;s:5:"_csrf";i:1;s:32:"BYujKqlzQKR3DdbUikW5VugstpBepXm9";}',
];

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