Hi Helen Gschwend, Thanks for your patience, we have introduced this feature in our recent release.
We have added an exclusive Page not found (404 error) section in the Analytics menu. If any visitor access unavailable URLs in your knowledge base, it would be recorded as 'Page not found (in technical terms 404 error). For a healthy knowledge base (and good SEO) this error should be avoided. Users can view the data when such errors occur and resolve it.