PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791489938',
];

$_COOKIE = [
    'PHPSESSID' => 'rdkkqb598q0ctpkiicd3mendd2',
    '_csrf' => '2580a33843aa65ca6d42ac2df8e3ae7e95f6d5af10eb2c1fad09729b59e470f5a:2:{i:0;s:5:"_csrf";i:1;s:32:"Pfms7YNfEYDyx79HogvfD1CFQQbg_Wu3";}',
    'topics-session' => '1791545698.515.16697.627587|d197bbbd1d400bd72372bc93068ad169',
];

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