Second aggregation not working

[amirmasoud]

the following query not working:

{
  post_aggregate {
    aggregate {
      count
      sum {
        ...aggregateOnFragment
      }
      avg {
        ...aggregateOnFragment
      }
      max {
        ...aggregateOnFragment
      }
      min {
        ...aggregateOnFragment
      }
    }
  }
  user_aggregate {
    aggregate {
      count
      sum {
        ...aggregateOnFragment
      }
      avg {
        ...aggregateOnFragment
      }
      max {
        ...aggregateOnFragment
      }
      min {
        ...aggregateOnFragment
      }
    }
  }
}

fragment aggregateOnFragment on PostResultAggregateType {
  id
}

A possible point of failure: aggregateSupport trait.