PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791608052',
];

$_COOKIE = [
    'PHPSESSID' => 'bb5l3f86a6l95u872n51sbk625',
    'topics-session' => '1791938350.512.16958.347316|d197bbbd1d400bd72372bc93068ad169',
    '_csrf' => 'bf33e74bb039689fae370241624fabc99271b3c7984b41850ec55ed7d435ea63a:2:{i:0;s:5:"_csrf";i:1;s:32:"f_KmiCGbuMhptYnQtJXxFoheAMfWsj3p";}',
];

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