PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791209876',
];

$_COOKIE = [
    'topics-session' => '1791226596.24.16490.651812|d197bbbd1d400bd72372bc93068ad169',
    '_csrf' => '53f896539837d54838a04696ffc86eb9788a13342f87a5be14b6233e2e4a72b9a:2:{i:0;s:5:"_csrf";i:1;s:32:"Or_Pa1ghegJefleR4t5tNrak39C6Yx9Y";}',
    'PHPSESSID' => '2cj596aujj6d25fmfn5at15ii4',
];

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