PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1765668793',
];

$_COOKIE = [
    '_csrf' => 'f1b5df78c07ac1ea7d70a7f01dd29bb21143c479e3bb7cca202e6f9ee4026880a:2:{i:0;s:5:"_csrf";i:1;s:32:"D35_PKMrq0WElyYTVQr0qPf55IW8LaZI";}',
    'PHPSESSID' => '68lo1gmv480gplaoengdt1gve1',
    'topics-session' => '1765723166.669.15686.1189|d197bbbd1d400bd72372bc93068ad169',
];

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