Hide a specific category in admin All Posts page (WordPress)

If we look at the official documentation for WP_Query: https://codex.wordpress.org/Class_Reference/WP_Query#Category_Parameters Show posts associated with certain categories. cat (int) – use category id. category_name (string) – use category slug. category__and (array) – use category id. category__in (array) – use category id. category__not_in (array) – use category id. The problem is that cat demands a category ID, … Read more