PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1790857391',
];

$_COOKIE = [
    '_csrf' => '5d1fc6f79d9af9bf1ff4751bb2ab74ef315d548839374ab9f582f33f05ce766da:2:{i:0;s:5:"_csrf";i:1;s:32:"4rwAjZENWNwQFR088xMp23M--XUDGkE-";}',
    'topics-session' => '1791582034.002.16814.880750|d197bbbd1d400bd72372bc93068ad169',
    'PHPSESSID' => 'vach22nh97hjb0bfiqp0u7pup6',
];

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