PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1791473202',
];

$_COOKIE = [
    '_csrf' => '2953c4be140151c1232a50debe4fc48b1be3208a943f4aa1762c8d0406903eafa:2:{i:0;s:5:"_csrf";i:1;s:32:"9ljVCxecXy3uAzAE6rlk8LHIWl4L4Cds";}',
    'topics-session' => '1792038575.233.17043.417907|d197bbbd1d400bd72372bc93068ad169',
    'PHPSESSID' => 'fdl4c3oid09435v5e8li57vum5',
];

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