PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791490161',
];

$_COOKIE = [
    '_csrf' => '107b15d077b0f074dc039036dfdc6669c3639d6ed70d445251cd141800aacae8a:2:{i:0;s:5:"_csrf";i:1;s:32:"dEUoUOyNXOqGxFsoS-RQMi7hlcE121ea";}',
    'PHPSESSID' => '4oh7gt6g4pes6thkogdcavbqu6',
    'topics-session' => '1791895274.256.16511.901947|d197bbbd1d400bd72372bc93068ad169',
];

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