We are running an educational forum, and use lots of images in discussions. Users can only see these images only after login. So we are receiving following message in google web master tools:
Googlebot for smartphones found an increase in authorization permission errors
Two common reasons for this issue:
- returning an HTTP 403 (forbidden) response code,
- displaying a login page for Googlebot for smartphones.
Does it impact search rankings?
If so, how to avoid these ?