Wordpress Database Error on a page...

Hello !

I have a big problem here with one of my websites...
Here is the website (and the problem page) : http://www.littlefashionweek.com/exposants/

Months ago, the filters on the right worked well. Now, the filters doesn't work at all and I don't know why... I have no jquery issue but if I change debug to true, I have this error :

WordPress database error: [You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'FROM wp_posts JOIN wp_postmeta ON (wp_postmeta.post_' at line 1]
SELECT meta_value AS FROM wp_posts JOIN wp_postmeta ON (wp_postmeta.post_id = wp_posts.ID) WHERE post_status = 'publish' AND meta_key = ''

What does that mean ?

Thanks a lot !