PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791824858',
];

$_COOKIE = [
    '_csrf' => '8ea9f72b4b9bd1d132d4535d675c6b3629eac39e40adb2723c0082c9175eeed8a:2:{i:0;s:5:"_csrf";i:1;s:32:"aH4Lhm6Yt6ThT746uS_yZKL0mXjPWSGS";}',
    'topics-session' => '1791944047.599.16975.270402|d197bbbd1d400bd72372bc93068ad169',
];

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