PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791928525',
];

$_COOKIE = [
    'topics-session' => '1791961676.186.16975.70744|d197bbbd1d400bd72372bc93068ad169',
    '_csrf' => 'b0b067846ad91742ef05358053e6215e0f2008982c3e6c990b9c9821f614a483a:2:{i:0;s:5:"_csrf";i:1;s:32:"-5jIX3XIw9G6uRaHPbEurEHTIn4O8GUB";}',
    'PHPSESSID' => 'ni997f5mecph9oo2ktn74korq0',
];

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