When selecting a value for the "Generate Thumbnails as User" field, make sure to select a user or group that has, in the user filter, explicitly been granted permission to see the data.
This is the expected behavior when the user or group selected in the "Generate Thumbnails as User" does not have permission to see the data. Such a behavior happens even though all members
of the selected group have permission to see the data. Unless the group itself has explicitly been granted permission in the user filter, the generic icon will show up as though a user/group with no permissions was selected.
Sankarmagesh Rajan - I Published the Dashboard incorporating the USERNAME applied in the filter area. it works for my user name but for other username they see empty chart. can you help me on this issue
Have you created calculation
username()=[Users] consider users is the one column in db.
Or whet you added in calculation.
when you add username calculation then it will show user based data in view.