[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 '' at line 3 SELECT id_parent, is_root_category FROM `ps_category` WHERE `id_category` =
at line 605 in file classes/db/Db.php

599. 			WebserviceRequest::getInstance()->setError(500, '[SQL Error] '.$this->getMsgError().'. From '.(isset($dbg[3]['class']) ? $dbg[3]['class'] : '').'->'.$dbg[3]['function'].'() Query was : '.$sql, 97);
600. 		}
601. 		else if (_PS_DEBUG_SQL_ && $errno && !defined('PS_INSTALLATION_IN_PROGRESS'))
602. 		{
603. 			if ($sql)
604. 				throw new PrestaShopDatabaseException($this->getMsgError().'<br /><br /><pre>'.$sql.'</pre>');
605. 			throw new PrestaShopDatabaseException($this->getMsgError());
606. 		}
607. 	}
608. 
609. 	/**