PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791245809',
];

$_COOKIE = [
    'PHPSESSID' => 'fbi5on3rsfm8t9uvjuqmnv2tv6',
    '_csrf' => '68cd1eb2fc8fc81d0870a711df2a3f7493abbb930e1b1df3c53b85b7f3c8c85ea:2:{i:0;s:5:"_csrf";i:1;s:32:"Hs5gSgp4qcs3bVXCSHZeymfo5T2R5AUQ";}',
    'topics-session' => '1791252130.068.16476.345742|d197bbbd1d400bd72372bc93068ad169',
];

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