PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791489691',
];

$_COOKIE = [
    'PHPSESSID' => '3qd4r6l7d9ofd5huj8v7d774v1',
    'topics-session' => '1791804487.311.16490.124117|d197bbbd1d400bd72372bc93068ad169',
    '_csrf' => '50627dee1a0c81efc4b23adacc14d3638773e17334ffcb5806ac865cea623484a:2:{i:0;s:5:"_csrf";i:1;s:32:"QbO3XTzi5RV5B6EziloXN3f8uSpKdtvW";}',
];

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