PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791986388',
];

$_COOKIE = [
    '_csrf' => '5a37c4fdf423e9700bf882a015b228d0c4b869a8985019e52b3c5e66e6309a6aa:2:{i:0;s:5:"_csrf";i:1;s:32:"bJMobsrVIMl8Sl5Tqg6TumkdU3_i04kq";}',
    'topics-session' => '1791993682.824.16958.82590|d197bbbd1d400bd72372bc93068ad169',
    'PHPSESSID' => 'd6n0s3sjbfs1lnri9805j53pj1',
];

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