Board Thread:Support Requests - Getting Technical/@comment-100069-20141213153151/@comment-452-20141214133542

That category page does not exist.

See how the "edit" button says "create" instead of "edit"?
 * That means the page doesn't exist.

See how when you try to view the page history, there is no history?
 * That means the page doesn't exist.

The link to the category should be red, I'm unsure why it's not, because "Category:Testing whether this link is red" is red.

Edit: That and many other non-existing categories are listed on Special:WantedCategories

Edit: thanks Tupka217!