PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791334062',
];

$_COOKIE = [
    'PHPSESSID' => 'jcb7up5t8tcvf1kuroh8saenb2',
    '_csrf' => 'e8e6939f89168dcb6100a87fb5e0ed957d3717715a7e8f77f0e3193b3126818ba:2:{i:0;s:5:"_csrf";i:1;s:32:"hjrql9kKnU27ATv34ZnvDR33ZM4kYbGX";}',
    'topics-session' => '1791462248.196.17043.725144|d197bbbd1d400bd72372bc93068ad169',
];

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