Either the website is stopped or the requested domain name is not configured for any website:
http://www.conquercancer.ca/site/TR/Events/Vancouver2015?px=1812799&pg=personal&fr_id=1524
If you're an administrator of this site, you need to go to
Sites
and make sure the following domain name is configured either in the site properties or a domain alias of a running web site:
www.conquercancer.ca