PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1765773012',
];

$_COOKIE = [
    'topics-session' => '1766043327.371.15683.897205|d197bbbd1d400bd72372bc93068ad169',
    '_csrf' => '8e07eb4a28e4540349e9b347eb72eb9e9212495608552737c32245660b714a25a:2:{i:0;s:5:"_csrf";i:1;s:32:"WTfPye7NI6YQR9xdlKiDuECc1lQK06xj";}',
    'PHPSESSID' => 'e1g9s7k4jqmdkbsjjusjfofop5',
];

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