PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791367261',
];

$_COOKIE = [
    '_csrf' => 'aa7a8fc570936d54000f74304b04cde13fcaef5124cc5e6c43533dba57cbaa75a:2:{i:0;s:5:"_csrf";i:1;s:32:"yd2n-dfvguNSKo1HDDslCMiNx5ypWnM-";}',
    'PHPSESSID' => '5mctsg9dvm318j27d7gp72igh6',
    'topics-session' => '1791788207.4.16697.486043|d197bbbd1d400bd72372bc93068ad169',
];

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