Hello guys. I took over someone`s SEO project. This SEO guy gathered some backlinks for the site. Some backlinks are questionable. Now, one of sites displays this message: You don`t have permission to access the requested directory. There is either no index document or the directory is read-protected.
I am curious why Google is displaying this on the search console. Was this a bad backlink? Was this guy using a private blog network method?
Any advice on this topic is greatly appreciated. Thanks all.