[PrestaShopDatabaseException]

You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'AND pl.id_lang = 1' at line 2

SELECT * FROM markelec_smart_blog_category_lang pl, markelec_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 = 1

at line 791 in file classes/db/Db.php

786.         if ($webservice_call && $errno) {
787.             $dbg = debug_backtrace();
788.             WebserviceRequest::getInstance()->setError(500, '[SQL Error] '.$this->getMsgError().'. From '.(isset($dbg[3]['class']) ? $dbg[3]['class'] : '').'->'.$dbg[3]['function'].'() Query was : '.$sql, 97);
789.         } elseif (_PS_DEBUG_SQL_ && $errno && !defined('PS_INSTALLATION_IN_PROGRESS')) {
790.             if ($sql) {
791.                 throw new PrestaShopDatabaseException($this->getMsgError().'<br /><br /><pre>'.$sql.'</pre>');
792.             }
793. 
794.             throw new PrestaShopDatabaseException($this->getMsgError());
795.         }
796.     }