PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791110622',
];

$_COOKIE = [
    'PHPSESSID' => 'htvv19m5njs9ujq5ku00okrj27',
    'topics-session' => '1791196408.565.16958.29102|d197bbbd1d400bd72372bc93068ad169',
    '_csrf' => 'c17099707fea2ae0ab0e5187c181fa5103618c3abd79751d9c0bc4e8b5daab9da:2:{i:0;s:5:"_csrf";i:1;s:32:"HiIwSmozlsjB8sJj-ZEfN8UjkrbIp9VC";}',
];

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