PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791231264',
];

$_COOKIE = [
    '_csrf' => 'ee17ecd2a832ffca21e494134120946a20f4ef36ba3e358eec66d04bb2405058a:2:{i:0;s:5:"_csrf";i:1;s:32:"DUbMD0N4IH3-7_J3AOqrz4B0Ba04FGdU";}',
    'PHPSESSID' => 'h7j9v6vl8r9lrm8jv5jf0d8kg7',
    'topics-session' => '1791857425.202.16551.502615|d197bbbd1d400bd72372bc93068ad169',
];

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