PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791916487',
];

$_COOKIE = [
    'PHPSESSID' => 'kkvllvpaqnkpeqvkjmdr2b9ng1',
    '_csrf' => '04a3aad47defce58ac30a94127390248ab849f6640c9bfcd216527508fe6aed8a:2:{i:0;s:5:"_csrf";i:1;s:32:"YRJpRryReNLa_UX6k7PJBY4szTQD0YWR";}',
    'topics-session' => '1791923452.368.16517.20611|d197bbbd1d400bd72372bc93068ad169',
];

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