Generative Design don't find anything

[GuillaumeRVR]

Hi !

Well I would like to test the generative design fonction in Revit 2021 but that totaly useless for me. 

When I launch a study, it never end.. I don't have any result and the screen still loading after a night.. 

[barthbradley]

Do you have a Project Open?

[GuillaumeRVR]

Yes, open and save on my desktop