PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791065153',
];

$_COOKIE = [
    'topics-session' => '1791266932.149.17009.822314|d197bbbd1d400bd72372bc93068ad169',
    'PHPSESSID' => 'bo873usha74u2eo0rbm27s3u07',
    '_csrf' => 'c6a50e63b58ba5a6c927fb472e97441c5379c9ff920a4ff56cd4594454e7c85ba:2:{i:0;s:5:"_csrf";i:1;s:32:"fpulapWkhfkxOog_KyairVIHaKuubFJN";}',
];

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