PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791269257',
];

$_COOKIE = [
    'topics-session' => '1791340002.959.16479.674669|d197bbbd1d400bd72372bc93068ad169',
    '_csrf' => 'cf76852085cb167e08ad57773af8bcd8d81fdd98583f912b6012da5df9781746a:2:{i:0;s:5:"_csrf";i:1;s:32:"J2LnCQpOLFLEBOofbXJl3GsQr2j6h7HJ";}',
    'PHPSESSID' => 'hho1hvuq7voig95fhnbsqdst32',
];

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