PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791486892',
];

$_COOKIE = [
    'topics-session' => '1791508970.066.16551.500569|d197bbbd1d400bd72372bc93068ad169',
    '_csrf' => 'c559db9ca7fefd45d63ccec5343271c9e738206529d8b04b2273375ea86ab950a:2:{i:0;s:5:"_csrf";i:1;s:32:"LjAGM9lgX1x6BNpzaMs2po0ZX0ybMbk1";}',
    'PHPSESSID' => '2ctria0gmudrmvd4hetg7j7a52',
];

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