Thread:Mira Laime/@comment-24169760-20190310212358/@comment-34888194-20190310215740

That means the category wasn't created. A category was created if you click the category button and write something in that category. That's where the category page exist. Although the category page wasn't created, the category still list pages that were associated with that category.

Many people thought a category page was created if you just add a "non-existing" category in a page, but that's wrong. As a said, a category page was created if you click the "create" button and write something in there.