Example GitHub v4 API Query that fails

example.graphql

{  
  repository(name: "MidiPlayerJS", owner: "TimMensch") {
    ref(qualifiedName:"tim") {      
      name
      target {
        ... on Commit {
          author {
            name
          }
          blame(path:"package.json") {
            ranges {
              commit {
                author {
                  name
                }
              }
              startingLine
              endingLine
            }
          }
        }
      }
    }
  }
}