Hi
I wonder can anyone explain this error

Required but not found URLs (HTTP code 404)

URL Error Hits
Referers
/links/undefined 1575
http://www.wilnecote-guides.co.uk/links/intlink.html


I get it on search engine stats from this site www.wilnecote-guides.co.uk

I have checked the page and can find no bad links
I am sorry for what might be a simple question but I have never come across
this before

Many thanks
Ian