Tags view SQL error

getData(): SQL QUERY ERROR: Unknown column 'rel.catid' in 'order clause' SQL=SELECT i.id, i.*, ie.*, CASE WHEN CHAR_LENGTH(i.alias) THEN CONCAT_WS(':', i.id, i.alias) ELSE i.id END as slug, CASE WHEN CHAR_LENGTH(c.alias) THEN CONCAT_WS(':', c.id, c.alias) ELSE c.id END as categoryslug FROM jos_content AS i JOIN jos_flexicontent_items_ext AS ie ON ie.item_id = i.id JOIN jos_flexicontent_tags_item_relations AS tag ON tag.itemid = i.id JOIN jos_flexicontent_types AS ty ON ie.type_id = ty.id JOIN jos_categories AS c ON c.id = i.catid LEFT JOIN jos_users AS u ON u.id = i.created_by LEFT JOIN jos_flexiaccess_acl AS gt ON ty.id = gt.axo AND gt.aco = "read" AND gt.axosection = "type" LEFT JOIN jos_flexiaccess_acl AS gc ON c.id = gc.axo AND gc.aco = "read" AND gc.axosection = "category" LEFT JOIN jos_flexiaccess_acl AS gi ON i.id = gi.axo AND gi.aco = "read" AND gi.axosection = "item" WHERE tag.tid = 14 AND i.sectionid = 6 AND (gt.aro IN ( 0,1 ) OR ty.access <= 2) AND (gc.aro IN ( 0,1 ) OR c.access <= 2) AND (gi.aro IN ( 0,1 ) OR i.access <= 2) GROUP BY i.id ORDER BY rel.catid, rel.ordering ASC, i.title LIMIT 0, 20