PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791495842',
];

$_COOKIE = [
    'PHPSESSID' => '3dskku7rtjurh0jovnie1m0fp5',
    'topics-session' => '1791573072.144.16517.581258|d197bbbd1d400bd72372bc93068ad169',
    '_csrf' => '6d860db068e275a11091f5a327b6061740541917e29d575a77f17233a724b300a:2:{i:0;s:5:"_csrf";i:1;s:32:"wLcH5IqCNm2_CTJeJGnitOIsHRrM-fov";}',
];

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