PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791259670',
];

$_COOKIE = [
    'topics-session' => '1791383213.544.16940.741958|d197bbbd1d400bd72372bc93068ad169',
    '_csrf' => '192e21fabfbd0b6282be7b6b3ed265d8a352efa0d63bf6919ac8f452a59b3605a:2:{i:0;s:5:"_csrf";i:1;s:32:"GG8-IDRNM2Cfyffo4g3cc2PY27KZqtYJ";}',
    'PHPSESSID' => 'av946bqbq9m558dqme1us61rq1',
];

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