Obtain staffing plan form Clarity under Actions > print functionality is not working which were all NULL.
Release : 16.1.0
Actions to print (output) data into an Advanced Report custom report.
The actions that produce the report but it is not returning any results which were all NULL but should not be.
The OOTB data is there but the call for custom report query was doing a lot more.
First step would be to check with developer to see why report is returning null (If needed support can take a look at the queries.) and to check the location of Actions, where actions should be placed in the app as this will have impact on data results i.e. from the project properties page or cost plan details page.