PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1790890660',
];

$_COOKIE = [
    'PHPSESSID' => '5mfi8gjm7ln107m28tar0ei125',
    'topics-session' => '1791174844.048.17043.894806|d197bbbd1d400bd72372bc93068ad169',
    '_csrf' => 'e61e2ac46ee73bb1d33be678a30e77a4dbf4b7efa9c16f66e5efcfca99d761e1a:2:{i:0;s:5:"_csrf";i:1;s:32:"aanwM_gX9dKfkW7PejI-dvmUoAsp8-MC";}',
];

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