[AGIPD] [PC] Fixing ValueError
Description
Fixes an error in condition checking whether any old constants were retrieved.
How Has This Been Tested?
/gpfs/exfel/exp/SPB/202331/p900376/scratch/PC_test/12on/ runs 313-320 12on_900376_r313_r320.pdf
Relevant Documents (optional)
Types of changes
- Bug fix (non-breaking change which fixes an issue)
Checklist:
Reviewers
Edited by Vratko Rovensky