PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791301092',
];

$_COOKIE = [
    '_csrf' => '108e305b2afb031b1c202290d9be2313d0110571181919d16573708e323cd161a:2:{i:0;s:5:"_csrf";i:1;s:32:"WZWx-mm60ES9CJKm4MVMhRs9YwNMi3pl";}',
    'topics-session' => '1791459538.916.16958.956392|d197bbbd1d400bd72372bc93068ad169',
    'PHPSESSID' => 'unomehkorvc1tn0d56ml560sd3',
];

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