Activity Report issue

Hi all,
Just a small question concerning the report section of Projeqtor.
When I select :"Plan de charge par ressource - Hebdomadaire" without selecting any specific resources, the graph is well ploted with all the employees and the corresponding number of worked days per week.
However, when I select a specific employee, I obtain :"Aucune donnée à afficher pour ce rapport".
Of course, I tried several month/year, but same result.

Log file doesn't show any particular event.
Any ideas ?

Many thanks

 

Many thanks Babynus for the quick answer.

No issue when I do not select any resource. The graph take into account all my employees.
Actually it works also fine for main of my resource (when I individualy select a resource for a weekly report), only one resource has issue.
It comes from :
globalWorkPlanningPerResource.php
$queryWhere.= " and t1.idProject in " . getVisibleProjectsList(true, $idResource) ;

For one resource, getVisibleProjectsList return only one idProject even if this resource has many projects.