Add dataset button displays an Internal Server Error

After implementing datastore and filestore i realised that i just wouldnt be able to add dataset, i guess its a permission issue. any help to fix this will be appreciated.

note that organisation and group works well because i didnt implement scheming on them.

Reproduce the Internal Server Error while using the Add dataset button after enabling datastore and filestore, then inspect the server error and permission behavior. The issue is done when dataset creation works, while the existing organisation and group behavior remains intact.

Written by the indexing model from the issue text.