PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1766095390',
];

$_COOKIE = [
    '_csrf' => '168f9a48b7b1f1c07525556b707db307e2c8a7eb5b6cc5d8f8010fb71038cb07a:2:{i:0;s:5:"_csrf";i:1;s:32:"mD05JisiJtmhHeCesiIUvvELVk8WJBss";}',
    'topics-session' => '1766253764.307.16319.254891|d197bbbd1d400bd72372bc93068ad169',
    'PHPSESSID' => 'gfl6lmkegs39hvri2hf5namjb6',
];

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