Facebook Share function not working

Hi!

I have a problem trying to share Quiz results on Facebook. I used a different Quiz plugin in the past and had a similar problem trying to use the share function.

I have added a 1 Question Quiz at the end of this post as an example:

http://holaquepasa.com/la-gasolina-un-poco-mas-cara/

Sharing the results on Twitter works (as it did with the other plugin I was using in the past), but on Facebook it just shares a very long URL that leads to “Page not found”, when clicked.

Anybody knows why this happen, and a solution? Any help is appreciated.

Thanks!