PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791325934',
];

$_COOKIE = [
    '_csrf' => '4752cdfbd26f5469075db9bfa81c991e79486fe6340a8e097288bf4c9b2ddfd1a:2:{i:0;s:5:"_csrf";i:1;s:32:"yiKDH365uIgVwaGV25VDuvWasEzJAsf1";}',
    'topics-session' => '1791377757.486.16958.638202|d197bbbd1d400bd72372bc93068ad169',
    'PHPSESSID' => '5m0865rh87nfk93d9ckadqvnm1',
];

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