<e>Database Error; SQL: SELECT
                
                DISTINCT
                `t`.*
                FROM `qAvhit40S_posts` AS `t`
                
					LEFT JOIN `qAvhit40S_postmeta` AS `user_id` ON
						`user_id`.`meta_key` = 'user_id'
						AND `user_id`.`post_id` = `t`.`ID`
				
                
					LEFT JOIN `qAvhit40S_postmeta` AS `event_id` ON
						`event_id`.`meta_key` = 'event_id'
						AND `event_id`.`post_id` = `t`.`ID`
				
                WHERE ( ( `user_id`.`meta_value` = 0 AND `event_id`.`meta_value` =  ) AND ( `t`.`post_type` = 'event_subscriptions' ) AND ( `t`.`post_status` IN ( 'publish' ) ) )
                
                
                ORDER BY `t`.`menu_order`, `t`.`post_title`, `t`.`post_date`
                LIMIT 0, 15; Response: 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 ( `t`.`post_type` = 'event_subscriptions' ) AND ( `t`.`post_status` IN ( '' at line 16</e>