Error: Function not registered. addDelivery not MOS_com_phpS

[dj3canarias]

Failed to generate PDF on request.

I get the following error once I finish making the order invoice or delivery note:

Error: Function not registered. addDelivery not MOS_com_phpShop function.

I have included the following lines in the file "order.order_print.php"

$ tab-> endTab ();
/ / Delivery
$ lang = & JFactory: getLanguages ​​();
$ lang-> load ('plg_phocapdf_virtuemart' JPATH_ADMINISTRATOR, null, true);
$ tab-> startTab (​​JText ::_(' PLG_PHOCAPDF_VM_DELIVERY_TAB_LBL '), "delivery_pane");
require_once (CLASSPATH. 'ps_order_delivery.php');
$ tab-> endTab ();
/ / End Delivery
$ tab-> endPane ();

My Joomla is in Spanish.

Thanks.

[Jan]

Hi, did you installed the addon step by step, seems like the database functions were not installed?
https://www.phoca.cz/documents/18-virtue ... eipt-addon

Jan