PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791074175',
];

$_COOKIE = [
    '_csrf' => 'a07424ab09bb552e9d755aaccd01ce5e18a98f2cd79eca2b98634fc46ebb4cf9a:2:{i:0;s:5:"_csrf";i:1;s:32:"jvDIljP4etDVkaQvS97ykCZ5QEKku2dH";}',
    'PHPSESSID' => '3u9hfjodaujjo814225ags72h6',
    'topics-session' => '1791145026.553.16480.192038|d197bbbd1d400bd72372bc93068ad169',
];

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