Failing GraphQL query

empty.graphql

{
  issue_1: repository(owner: "microsoft", name: "TypeScript") {
    issueOrPullRequest(number: 1) {
      ...IssueOrPRBody
    }
  }
  issue_2: repository(owner: "microsoft", name: "TypeScript") {
    issueOrPullRequest(number: 2) {
      ...IssueOrPRBody
    }
  }
}

fragment IssueOrPRBody on IssueOrPullRequest {
  ... on Issue {
    id
    body
    timelineItems(last: 1) {
      ...issueTimelineItems
    }
  }
  ... on PullRequest {
    id
    number
    url
    title
    state
    body
    updatedAt
    assignees(first: 1) {
      ...users
    }
    timelineItems(last: 1) {
      ...pullRequestTimelineItems
    }
  }
}

fragment users on UserConnection {
  edges {
    node {
      avatarUrl
      login
    }
  }
}

fragment issueTimelineItems on IssueTimelineItemsConnection {
  edges {
    node {
      __typename
      ... on IssueComment {
        id
        author {
          login
          avatarUrl
        }
        body
        createdAt
      }
      ... on AssignedEvent {
        id
        createdAt
        actor {
          login
          avatarUrl
        }
        assignee {
          ... on User {
            login
            avatarUrl
          }
        }
      }
      ... on LabeledEvent {
        id
        createdAt
        actor {
          login
          avatarUrl
        }
        label {
          name
          color
        }
      }
      ... on UnlabeledEvent {
        id
        createdAt
        actor {
          login
          avatarUrl
        }
        label {
          name
          color
        }
      }
      ... on ClosedEvent {
        id
        createdAt
        actor {
          login
          avatarUrl
        }
      }
      ... on ReopenedEvent {
        id
        createdAt
        actor {
          login
          avatarUrl
        }
      }
      ... on MilestonedEvent {
        id
        createdAt
        actor {
          login
          avatarUrl
        }
        milestoneTitle
      }
      ... on DemilestonedEvent {
        id
        createdAt
        actor {
          login
          avatarUrl
        }
        milestoneTitle
      }
      ... on LockedEvent {
        id
        createdAt
        actor {
          login
          avatarUrl
        }
        lockReason
      }
    }
  }
}

fragment pullRequestTimelineItems on PullRequestTimelineItemsConnection {
  edges {
    node {
      __typename
      ... on IssueComment {
        id
        author {
          login
          avatarUrl
        }
        body
        createdAt
      }
      ... on AssignedEvent {
        id
        createdAt
        actor {
          login
          avatarUrl
        }
        assignee {
          ... on User {
            login
            avatarUrl
          }
        }
      }
      ... on LabeledEvent {
        id
        createdAt
        actor {
          login
          avatarUrl
        }
        label {
          name
          color
        }
      }
      ... on UnlabeledEvent {
        id
        createdAt
        actor {
          login
          avatarUrl
        }
        label {
          name
          color
        }
      }
      ... on ClosedEvent {
        id
        createdAt
        actor {
          login
          avatarUrl
        }
      }
      ... on ReopenedEvent {
        id
        createdAt
        actor {
          login
          avatarUrl
        }
      }
      ... on MilestonedEvent {
        id
        createdAt
        actor {
          login
          avatarUrl
        }
        milestoneTitle
      }
      ... on DemilestonedEvent {
        id
        createdAt
        actor {
          login
          avatarUrl
        }
        milestoneTitle
      }
      ... on LockedEvent {
        id
        createdAt
        actor {
          login
          avatarUrl
        }
        lockReason
      }
    }
  }
}