PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791397457',
];

$_COOKIE = [
    '_csrf' => 'bdc4875a5ff37135a788954df4475054c1bb170e2ba114939da132fef4bac711a:2:{i:0;s:5:"_csrf";i:1;s:32:"56csWwDgCGSBRYxwTk8EySoF_ambTd5K";}',
    'PHPSESSID' => 'sncdu7pf4s7jp47lvn9nosgc21',
    'topics-session' => '1791432774.765.16475.734648|d197bbbd1d400bd72372bc93068ad169',
];

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