Issue recorded as Ticket #1921

I don't reproduce the issue, and sure it should not happen/
Did you change some code ?

The error logged reports that Project::$idTrend does not exist.
But if you look at PRojectMain.php, line 58, $idTrend is correctly defined (and never unset).

If you changed some code, check that Project.php correctly extends ProjectMain.php.

I just find my error,
On an older version I wanted to hide some field so I comment it in ProjectMain.php...
How can I hide the field?

set $_fieldsAttributes['idTrend']='hidden'
or wait till end of month : new plugin will be provided to allow you to manage fields (hide, add, ...) and possibly hide some fields per type (For instance, you'll be able to hide the fields for 'phase" activities and hide other fields for 'tasks' activities 😉

great thks B)