PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1790856146',
];

$_COOKIE = [
    'topics-session' => '1791411277.855.16481.980630|d197bbbd1d400bd72372bc93068ad169',
    'PHPSESSID' => '8qin0m8irmqv7j8q8gu2mp1ti6',
    '_csrf' => 'b23a7656362537fc961a05baa8a8e8c0302c659699f9d9c56b87172631fe0e9ca:2:{i:0;s:5:"_csrf";i:1;s:32:"UBKK9ZqZ2zzMqQU0n_Mfi_UNAPQ0kc6Q";}',
];

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