PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791502639',
];

$_COOKIE = [
    'topics-session' => '1791788505.362.16901.954078|d197bbbd1d400bd72372bc93068ad169',
    '_csrf' => '6cfd4e2847cbae9d080b600472f4aea8144f7e2d63c9e5db5c90f2903490cdcaa:2:{i:0;s:5:"_csrf";i:1;s:32:"14mVutscZHHUdXGTZ5YGMTYi8xRrndSM";}',
    'PHPSESSID' => '9kqsov4m2aipnu10j8vn0570p1',
];

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