PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791319094',
];

$_COOKIE = [
    'topics-session' => '1791330893.583.17009.173558|d197bbbd1d400bd72372bc93068ad169',
    'PHPSESSID' => 'ubmufc37s1kch62f102cpectq0',
    '_csrf' => 'b52bc431611073a62b3f38cdf508f009173bb7b2482d77f74f9992f6b827dc73a:2:{i:0;s:5:"_csrf";i:1;s:32:"ZXKNmheK-kQscGHFFck7I9vjpDrs91tY";}',
];

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