PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791154231',
];

$_COOKIE = [
    '_csrf' => '5c98566374836ad5290dd336cfb7a9cc6ef9177e59fb11ba22087b5f0de432f9a:2:{i:0;s:5:"_csrf";i:1;s:32:"fomjBjRilRar8Ws4XxTTGtl_CbOIu85x";}',
    'PHPSESSID' => 'nsptkkr52os7imb1bjfnetefq1',
    'topics-session' => '1791251813.386.16958.693107|d197bbbd1d400bd72372bc93068ad169',
];

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