In Dashboard/Visits Overview I'm getting this error:
Non expected referer_type = 46 - in plugin Referrers. Also, I'm getting the same error when I try to check Row Evolution of sites, search engines, etc.
Any idea what could be the problem?
Are you using any additional plugins?
No, I'm not using any additional plugins.
I have fixed it - just deactivated and activated the core's plugin Referrers.