Test for google search console itemList

This posting is for the google search console itemlist errors which occured when there's not a single post in categories. If you want to handle this kind of problems, you can choose two of solution.

First one is, just checking your blog categories out whether any single post exist in your categories. If not, then you have to write anything such as test1, 2, 3.

(In fact, this case is not an error)...