Check why samples are not retrieved correclty

This finds datasets:

https://icatplus.esrf.fr/catalogue/6adaa5af-d17b-4e0e-9627-7b1a5bd40c62/samples?investigationId=810702957

https://icatplus.esrf.fr/catalogue/6adaa5af-d17b-4e0e-9627-7b1a5bd40c62/samples?investigationId=810702957&sortOrder=-1&limit=20&skip=0

this does not:

https://icatplus.esrf.fr/catalogue/6adaa5af-d17b-4e0e-9627-7b1a5bd40c62/samples?investigationId=810702957&sortBy=DATASET_DATE