Plone : KeyError: 'IDublinCore.language'


I am a neophyte in Plone. I tried to create a new Content Type with New Fields, but when I save, I get the following error:

Any idea how can I solve it ??



you can edit the defaults in xml mode or add patch in issue

How ?

If you are new to Phone (5), you should consider doing this TTW (Through The Web) and then just export it (if you need it later)

You can do this at http://yoursite/@@dexterity-types (or http://localhost:8080/Plone/@@dexterity-types )

thank you !!