PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1790974755',
];

$_COOKIE = [
    'PHPSESSID' => 'vc78lvh379qekm9m7tr4ipvtm4',
    'topics-session' => '1791004303.861.16615.777994|d197bbbd1d400bd72372bc93068ad169',
    '_csrf' => 'a7633099fedc8fdfecfe03297cd4254cf39999362cdecb30fabc9e39dae90b62a:2:{i:0;s:5:"_csrf";i:1;s:32:"TXKz8b9ptAJ5crIIYNTxm-bkXQeCRIwd";}',
];

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