PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1766051696',
];

$_COOKIE = [
    'topics-session' => '1766122377.282.16071.9210|d197bbbd1d400bd72372bc93068ad169',
    'PHPSESSID' => '4m2lmh0eoa4vf0d2pb12ju6rn5',
    '_csrf' => 'eb5214ef33a426d5d8d80de2c69de8d25a41a43edc7ed318770b1685699e3ca4a:2:{i:0;s:5:"_csrf";i:1;s:32:"211uoHa63KJ5sQ2PiSz_wA-JKHhRPBZ5";}',
];

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