Symptoms
Planning console throws an error message "Blank data returned. Contact System Administrator" while updating project task under project
Cause
Script include "ProjectRecalculationConstraints" is inactive
Resolution
Set this Out of the box (OOB) script include "ProjectRecalculationConstraints" active to ensure that planning console works correctly
Additional Information
Script include "ProjectRecalculationConstraints" is responsible to update all changes done on project level or project task level via planning console. We always recommend to use this script include OOTB to avoid upgrade issue.