PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1790981489',
];

$_COOKIE = [
    'topics-session' => '1791125799.443.16958.283082|d197bbbd1d400bd72372bc93068ad169',
    'PHPSESSID' => 'cpu18jk43ghle4ad06snskgkf4',
    '_csrf' => '86152320c762f99ececee804b35cbea4522462a3ba95802357724207f280c71fa:2:{i:0;s:5:"_csrf";i:1;s:32:"hpWYhSPUCuvbGXBuE_GvVF3bGn05AjhT";}',
];

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