Empty site after invoice and deliverynotification from the orders in the backend

-- HikaShop version -- : 5.1.6
-- Joomla version -- : 5.2.5
-- PHP version -- : 8.2.28
-- Browser(s) name and version -- : Mozilla 137.0.2

Hello there,
In the invoices and delivery bills, which can be printed out via the orders in the backend, there is always a blank page at the end. This is very annoying and not environmentally friendly.
Can you please remove the blank page at the end? Thank you.
Markus