Did you know there are some changes in the project management data model on R2019x FD03?
If you created projects/tasks data on a release prior to V6 R2019x FD03 (such as 2019x GA), you may encounter minor issues after you upgrade the system to 2019x FD03 or a later release. For example, you cannot see the tasks on the project schedule page and you cannot open the Gantt chart and others. For any new projects created on the new release, all will be working.