The 200 response code communicates that the request for a web page was successful. The 500 response code means that the request for a web page was unsuccessful.

If there are many pages not listed in the navigation, search engines may not find them because of your site structure. 3. Add self-referencing canonical tags to combat duplicate content ...

4. Analyze server logs If you’ve got a good relationship with your dev team, you likely have access to server logs. If you don’t, I understand your struggle. It’s the developers’ natural ...