When the fetchOrder is called on an order with insurance the createFromXML in Bpost\BpostApiClient\Bpost\Order\Box\Option\Insured failes.
It can be resolved using getting the children with the full namespace:
// $insuranceDetail = $xml->children('common', true); <-- fails
$insuranceDetail = $xml->children('http://schema.post.be/shm/deepintegration/v3/common');
Environment: PHP 8.2.6