PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791179933',
];

$_COOKIE = [
    'PHPSESSID' => 'sifgdq2ghha1v6m8439fa5mhv6',
    'topics-session' => '1791208782.78.16697.194413|d197bbbd1d400bd72372bc93068ad169',
    '_csrf' => 'd89713521820e33b6e412a35e897b8fa10ce6abd278147dc26e9c531389778fba:2:{i:0;s:5:"_csrf";i:1;s:32:"M8VYt8nwDqNZf8O-73xJ4plB0wssm6qy";}',
];

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