SQL: Select `ModelSeries`.* From `ModelSeries` where (model_id=106) and (series_id=) limit 1

Message: SQLSTATE[42000]: Syntax error or access violation: 1064 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 ') limit 1' at line 1

Fatal error: Call to a member function fetchAll() on null in /var/www/clients/client3/web31/web/system/class/DList.class.php on line 11