Welcome to the Question2Answer Q&A. There's also a demo if you just want to try it out.
+2 votes
in Q2A Core by

I think I have fragments of memory that I had this same problem years ago.
Can't recall for sure, but I think it was related to the URL structure in Admin Panel. Try selecting one of the upper URL options and make a new attempt to create categories.

Admin > General > URL structure
Did it work @ParYapt ? Let me know if it worked, so I can formulate an answer because this can be helpful for other people facing the same problem.

Please log in or register to answer this question.