PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791391505',
];

$_COOKIE = [
    'PHPSESSID' => 'k9f6e75k9g40gfk0uunbcp1kk5',
    '_csrf' => '150abb26407fd22f97e475e9ca4de1f50cd73a8b37938e9c2ab4df1dbb5a1d66a:2:{i:0;s:5:"_csrf";i:1;s:32:"BQxxuNFa-gGDfBj_oC3e3ZF8iXWSD9gD";}',
    'topics-session' => '1791432885.834.16697.593750|d197bbbd1d400bd72372bc93068ad169',
];

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