Hello,

I am upgrading a module from odoo 10 to odoo 12. It is build by another developer and it works perfectly fine in odoo 10. This module is supposed to generate a PDF report of custom format. It has a custom header and footer. I managed somehow to show its content by calling another layout, but the report wasn't appearing correctly. I am providing a short part of the reports template.

Here is the code:

https://pastebin.com/ctjXq29c

What may be causing the report to appear blank?