[CX] Error "Duplicate alias definitions" in GROUP BY clause

SELECT g.description AS account_name

     , p.description AS parent_account_name

  FROM `bucketname` g

  LEFT JOIN `bucketname` p 

    ON g.parent_account_name = p.name

   AND p.`type` = 'group'

 WHERE g.`type` = 'group'

 GROUP BY g.description 

     , p.description