Had this error in my test install of a project in another space after making a marketplace package for it. No idea what’s going wrong, nor are there any indications of errors in the requisite Ontology Manager.
This is quite a big problem for us. How do we fix this - is it an issue with the packaging step?
Update: it seems to be working when the object set is non-empty. But this error occurring for empty object sets is clearly not useful nor intended behaviour.