PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791591729',
];

$_COOKIE = [
    '_csrf' => 'a489b2705961c24746d38d1fc78da7f2c54f274e68ab0dcfb4e6947e51c3e33aa:2:{i:0;s:5:"_csrf";i:1;s:32:"q9iIs8qc57rs-Wm2RWb1Qp1ic4pKm8Wh";}',
    'topics-session' => '1791803962.766.16855.165630|d197bbbd1d400bd72372bc93068ad169',
    'PHPSESSID' => 'nlvd85s4hfna1nai1vmi10f385',
];

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