PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791077350',
];

$_COOKIE = [
    '_csrf' => 'fb5dbfd0c1811bd7a0b4a8e8f2a82efc917fb548aa83b0d50056dcbc733070f7a:2:{i:0;s:5:"_csrf";i:1;s:32:"_NbpZo6xVWb9Vnb8xTVBqDOdY4_ACnhf";}',
    'topics-session' => '1791234382.061.16697.327237|d197bbbd1d400bd72372bc93068ad169',
];

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