PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791003019',
];

$_COOKIE = [
    'topics-session' => '1791211858.989.16974.422121|d197bbbd1d400bd72372bc93068ad169',
    'PHPSESSID' => '5p1lk0gm59esgb9kcbst9jntn4',
    '_csrf' => '63376a03e2f20599fbcbdc9898ecce37e7e8e6b44e3ab551d3172eb4016b7303a:2:{i:0;s:5:"_csrf";i:1;s:32:"i3M08w2NRXFH2VF6k76Ofur7vH9W94gS";}',
];

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