[PrestaShopDatabaseException]

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 'AND pl.id_lang = 6' at line 2

SELECT * FROM ps_smart_blog_category_lang pl, ps_smart_blog_category p 
                       WHERE pl.id_smart_blog_category=p.id_smart_blog_category AND p.id_smart_blog_category= AND pl.id_lang = 6

at line 765 in file classes/db/Db.php

760. 			WebserviceRequest::getInstance()->setError(500, '[SQL Error] '.$this->getMsgError().'. From '.(isset($dbg[3]['class']) ? $dbg[3]['class'] : '').'->'.$dbg[3]['function'].'() Query was : '.$sql, 97);
761. 		}
762. 		elseif (_PS_DEBUG_SQL_ && $errno && !defined('PS_INSTALLATION_IN_PROGRESS'))
763. 		{
764. 			if ($sql)
765. 				throw new PrestaShopDatabaseException($this->getMsgError().'<br /><br /><pre>'.$sql.'</pre>');
766. 
767. 			throw new PrestaShopDatabaseException($this->getMsgError());
768. 		}
769. 	}
770.