PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1790966692',
];

$_COOKIE = [
    'topics-session' => '1791156808.261.16517.523782|d197bbbd1d400bd72372bc93068ad169',
    '_csrf' => '36d8e5b8732a5bc358adf3dc8af03c4c663086cb0fee11cfe37d66b43367d51ca:2:{i:0;s:5:"_csrf";i:1;s:32:"-sFUHxOGXogPQaEksD2m6Uj-RNcSSIr7";}',
    'PHPSESSID' => 'r6l5smmnv8b6noru6o3mok9b95',
];

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