Dolibarr 4.0 RC2 bug when create new contract - by: mromero

I do this:

- new contract
- I fill the basic data in the first form and click in "Create"
- In the next form, I add a new line with this option "Predefined services to sell", select one product and click in the button "add"
- now, click in the buttom to edit the line of product to change it price and click in the button "modify" but the price don't change and I get this error:

"Error You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ' fk_user_ouverture=NULL, fk_user_cloture=1, commentaire='', fk_unit=NULL WHERE r' at line 1"

My MySQL version is MySQL or MariaDB 5.5.34-cll-lve
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