PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1790972239',
];

$_COOKIE = [
    '_csrf' => 'ac1013820366045a71408b647a0e65d81d391f1fdc5278c0cae5340a6ab7a36ba:2:{i:0;s:5:"_csrf";i:1;s:32:"EanYwNAWvGLwgXqfTGxu1FurdsVrlROV";}',
    'PHPSESSID' => 'p6jd22349o5irufpco3s9cuol1',
    'topics-session' => '1791431949.729.16697.827347|d197bbbd1d400bd72372bc93068ad169',
];

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