PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1747039653',
];

$_COOKIE = [
    'topics-session' => '1765668774.693.15688.574962|d197bbbd1d400bd72372bc93068ad169',
    'PHPSESSID' => '55u66m8udgs657hdtti03fvmn0',
    '_csrf' => '555a2235b8033319a213906e947beab315e3fdcf8b35bc8c5c295d2624efb6a8a:2:{i:0;s:5:"_csrf";i:1;s:32:"C7Szwe5LmWjeuRQEMA6GLZPsR0ekQYDK";}',
];

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