I seem to be unable to edit categories currently. I have been accessing a category named "Deities" in my world, but when I try to edit anything in the Old Version Edit (As it uses custom content). I get told "Invalid Title". Additionally, this pop up appears when I try and view the category through the Old Version Edit.   It seems to be on all categories I have tried regardless of what the name of the category is.   Is this due to the change over or is there something more going on?

Steps to Reproduce

Editing: 1. Open Category in Old Edit 2. Make a change that would require saving. Save and the error appears.   Viewing World 1. Open Category in Old Edit 2. Select View Category The Error appears at the top of the article.

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