PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791594486',
];

$_COOKIE = [
    '_csrf' => '792d78115b9305ae8f68de3b6147a1fac7106f928fa006f21dba96f3dc4db084a:2:{i:0;s:5:"_csrf";i:1;s:32:"OMPeXKsEd_UNB1qzcnIbRRbDEuEUlBlD";}',
    'PHPSESSID' => 'bjf8olml517jb5m52vmad3fru3',
    'topics-session' => '1791614599.119.16490.574908|d197bbbd1d400bd72372bc93068ad169',
];

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