我有堆叠条形图的代码，从Using Vega Lite to display already-aggregated data它在织女星编辑器工程

{
  "data": {
    "values": [
      {"bin": "[-inf,8.0)", "bad_distr": 0.009210526315789473, "good_distr": 0.07763157894736843},
      {"bin": "[8.0,14.0)", "bad_distr": 0.075, "good_distr": 0.21842105263157896},
      {"bin": "[14.0,16.0)", "bad_distr": 0.009210526315789473, "good_distr": 0.05394736842105263},
      {"bin": "[16.0,44.0)", "bad_distr": 0.16052631578947368, "good_distr": 0.3236842105263158},
      {"bin": "[44.0,inf)", "bad_distr": 0.04078947368421053, "good_distr": 0.031578947368421054}
    ]
  },
  "transform": [
    {"fold": ["bad_distr", "good_distr"], "as": ["bad", "good"]}
  ],
  "mark": {"type": "bar"},
  "encoding": {
    "y": {"type": "ordinal", "field": "bin"},
    "x": {"type": "quantitative", "field": "good"},
    "color": {"type": "nominal", "field": "bad"}
  }
}

剧情很好

同样的数据，我在弹性数据库里，

相同代码抛出警告，未显示绘图

{
  "$schema": "https://vega.github.io/schema/vega-lite/v2.4.json",
  "title": {
    "text":  "Bin Plot",
    "fontSize":14
  },
  "data": {
    "url" : {
        "index": "scorecard_bin_plot",
        "body": {
          "size":10000,
          "_source": ["bin","good_distr","bad_distr"]
        }
      }  
      "format": {"property": "hits.hits"},
  },
  "transform": [
    {"fold": ["_source.bad_distr", "_source.good_distr"], "as": ["bad", "good"]}
  ],
  "mark": {"type": "bar"},
  "encoding": {
    "y": {"type": "ordinal", "field": "_source.bin"},
    "x": {"type": "quantitative", "field": "good"},
    "color": {"type": "nominal", "field": "bad"}
  }
}

我不明白这个问题
使用弹性和kibana 7.12.0