ODT problem on third party with v19

Hi,
i have a problem with the thirdparty module since i move from 18.0.5 to 19.0.1

When i am on the Thirdparty, i cannot generate an ODT document : i have a white screen (or in Chrome an HTTP ERROR 500).
I try to add the [!-- BEGIN xxx --] field but i don’t know what to put instead of xxx.

I can use ODT document in invoice, project, proposal

Can you help me?
Regards,
Jean-Michel

Hi, I receive an answer in the French Forum from the user KSAR
I add in my document the line :
[!-- BEGIN companycontacts --] [!-- END companycontacts --]

And the document is well generated.