XF 1.4 Sitemap and url errors

We have strange behavior of forum sitemap , i think that what it is , iam not sure .
We had addon installed called "Thread Navigation by Waindigo" this adds next/previous button to go to next or previous thread inside thread . After sometime we uninstalled addon , which soused google see this Buttons as looks missed and 404 error . My my question , how to tell google those links not there anymore here is screenshot . its shows we have 20k+ 500 errors links :(


XenForo moderator
Staff member
It's not really an XF issue - it's related to Google.

You may be able to get support on the GWT forum (if one exists).