PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1790947570',
];

$_COOKIE = [
    'topics-session' => '1791080042.381.16517.101436|d197bbbd1d400bd72372bc93068ad169',
    '_csrf' => '648e5d243355fcb418bb45908f787dcb7b0d90e58cf82684ee1d818c52affc27a:2:{i:0;s:5:"_csrf";i:1;s:32:"xG-eQTdgQGP1R1K-bmpDjBYXlvsUZ5Vi";}',
    'PHPSESSID' => 'q6imbcj1qbt4p8m1jhftmhrlj5',
];

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