ListTransfers API fails when given a cursor

[guoguojin]

when given a request that contains pagination such as this:

query rewards {
  transfersConnection(isReward: true, pagination: { first: 2, after: "eyJ2ZWdhVGltZSI6IjIwMjQtMDMtMDVUMTg6MTM6MzEuMDgyODgzWiIsImlkIjoiYmE1YTgzMDYxZjkwZjI3OGQwN2M3NzZjN2EzYmZhYmFkMzhlMmUzNmU2MDBiY2IwMmE2ZDUzY2ExN2NjZDg2ZiJ9"}) {
    pageInfo {
      hasNextPage
      startCursor
      endCursor
    }
    edges {
      node {
        transfer {
          id
        }
      }
    }
  }
} 

The API does not always construct valid queries and returns an internal error.

Slack conversation discussing the problem is here