Error with Database

Hi everyone,

Without me making any modifications to the file, I suddenly started to have this error display on pages:

Catchable fatal error: Object of class WP_Error could not be converted to string in /............./wp-content/themes/atahualpa353/functions/bfa_postinfo.php on line 308

Here is one of the links: http://www.earomania.ro/test/

The posts are showing fine though: http://www.earomania.ro/places-to-go...a/bran-castle/

Please help!