PRODUIT_PDF_MERGE_PROPAL is not supported by V13

Hi,
I tried to merge products linked pdf to the proposal with no lick, I found that

other setup
PRODUIT_PDF_MERGE_PROPAL
to merge products linked pdf files is not supported by V13

Please help

Wich exact version of Dolibarr are you using? I have seen in the code repository on GitHub that a fix for PRODUIT_PDF_MERGE_PROPAL has been merged into version 13.0.3.