Items no longer editable after update from 3.2 to 3.3
Hi, I followed these instructions to upgrade my installation from 3.2 to 3.3. Almost everything worked fine. But unfortunately I can't edit my items now, everything else works.
The preview works. But as soon as I click on "compose" I get an internal server error:
500: Property ( http://www.w3.org/1999/02/22-rdf-syntax- ns#value ) of resource ( http://www.tao.lu/Ontologies/TAO.rdf#Langel-GR ) has more than one value do not use getUniquePropertyValue but use getPropertyValue instead
Even when creating a new item I get this error.
Obviously it has something to do with the data language. However, I lack any idea what I can do now. Can anyone help me with that?