PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1790885016',
];

$_COOKIE = [
    'topics-session' => '1790888532.837.16615.97463|d197bbbd1d400bd72372bc93068ad169',
    'PHPSESSID' => 'voqaa331emthfnkq7q259fnk67',
    '_csrf' => 'a5efed326f43b5564218eb0642bbbdbb28ebea247278c1bbb6597f6d9e14d513a:2:{i:0;s:5:"_csrf";i:1;s:32:"wWSc_PERMr-gbCld1FnPRzHUPHfeg7fm";}',
];

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