PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791157751',
];

$_COOKIE = [
    'topics-session' => '1791380146.605.16476.8172|d197bbbd1d400bd72372bc93068ad169',
    'PHPSESSID' => '3s1o3l7ql41g3vnm5ta2gqhsa5',
    '_csrf' => '4b9b133e310aeba071e608b6fccd46c040edbf0f9e35248c6eced239eda8afc0a:2:{i:0;s:5:"_csrf";i:1;s:32:"Chalr-cB_UoB0jsvJVAxj0GQ01K9xryz";}',
];

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