PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1765662790',
];

$_COOKIE = [
    'topics-session' => '1765788590.903.16176.687275|d197bbbd1d400bd72372bc93068ad169',
    'PHPSESSID' => 'hjr719q0fbfghbbfkt4747t5h3',
    '_csrf' => 'fbe3037940a0d04775ab94ca7fa75f665bf56d024ec7935f8d0e68f1e41425f6a:2:{i:0;s:5:"_csrf";i:1;s:32:"Xqz3tTS3ofp02a_SK5PAkP9M6uZeJwQ9";}',
];

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