[Plugin: Facebook Recommendations Bar] Facing a error "Object at URL" – How to solve it?

Hi,
I have installed this plguin it work well but Most of time it say’s Object at URL “url of post” has og:type of ‘website’. The property ‘article’ requires an object of og:type ‘article’.

If anyone know how to solve it please take a minute to teach me too…

Thank you..

http://wordpress.org/extend/plugins/facebook-recommendations-bar/