How do i fix the url has too many segments error?

Hi there, i am having, “Error: The URL contains too many segments.” the link is like www.mysite.com/content/something/index.html/index.html/index.html/index.html/index.html/index.html/index.html/index.html/index.html/index.html/P4 i am trying to redirect this to a 404 page or somehow fix it. How do i do this? thanks.