PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791886299',
];

$_COOKIE = [
    'PHPSESSID' => 'l65okjg1eiegu05gs8v39pjk63',
    '_csrf' => '5a19ec9680bbacdfa1207effa3c59845f917a221034bfe29b20efd95fc3f026da:2:{i:0;s:5:"_csrf";i:1;s:32:"8yFcE-ESI5smO5EmZ4EvITlpo5IYvk2t";}',
    'topics-session' => '1791924882.692.16974.790790|d197bbbd1d400bd72372bc93068ad169',
];

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