PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791117037',
];

$_COOKIE = [
    'PHPSESSID' => '0ngjgg5nfubsehioifhc2mp4b1',
    'topics-session' => '1791441605.954.16814.918516|d197bbbd1d400bd72372bc93068ad169',
    '_csrf' => '4c0f1c94fa8cf186858a4d8cc8c11cb8436996c9e1dcd412a3eaf99074957211a:2:{i:0;s:5:"_csrf";i:1;s:32:"9mQZB_P3JUxHG-KYNmBmTBZkzR_D1uvW";}',
];

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