PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791220057',
];

$_COOKIE = [
    'topics-session' => '1791234092.533.17008.849847|d197bbbd1d400bd72372bc93068ad169',
    '_csrf' => '10770070c9e17437a8ad7312386a8c3426021bf98d43e1c8d1bb18e72867e43ba:2:{i:0;s:5:"_csrf";i:1;s:32:"GXPfouJFGroZhgjPSizY8m4pG34zYpQX";}',
    'PHPSESSID' => 'dpkbnfrv5im5atu9r0cl3glqk6',
];

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