this is my website http://anthony-fitness.com and everything works great, i noticed on google webmaster tools that a couple of days ago one of my most popular post is returning the 404 nothing found error. http://anthony-fitness.com/methode-lafay/
went on the website and the post is there but when i clic on it i get the error!
But when i change the link to for exemple .com/methode-lafayy/ and save it, the post works.
any ideas on how to fix this or why is this happening?