PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791526977',
];

$_COOKIE = [
    '_csrf' => '480ee1e93a56804a34b3bfb631dcdb38f9629cd995496af7b3594914a29da610a:2:{i:0;s:5:"_csrf";i:1;s:32:"VFPE8Gk05rnbs3N8FQR91v7hf4IUIdNW";}',
    'topics-session' => '1791529655.426.16490.466981|d197bbbd1d400bd72372bc93068ad169',
    'PHPSESSID' => 'urslenj6h9vmu2romaqlfldqo7',
];

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