Choropleth chart not getting displayed

[diptenduLF]

Bug Description

The JSON given below is not showing any error but [Warning] Infinite extent for field "Rainfall": [Infinity, -Infinity]

{
   "$schema": "https://vega.github.io/schema/vega-lite/v5.json",
  "width": 500,
  "height": 300,
  "data": {
    "url": "https://raw.githubusercontent.com/learnityframework/learnityframework/master/westbengal.json",
    "format": {"type": "topojson", "feature": "west-bengal"}
  },
  "transform": [
    {
      "lookup": "dt_code",
      "from": {
        "data": {
          "url": "https://raw.githubusercontent.com/learnityframework/learnityframework/master/District_wise_cumulative_rainfall_2015-2022.csv"
        },
        "key": "dt_code",
        "fields": ["Rainfall"]
      }
    }
  ],
  "projection": {"type": "mercator"},
  "mark": "geoshape",
  "encoding": {"color": {"field": "Rainfall", "type": "quantitative"}},
  "config": {}
}

The Data Viewer is not showing any data for source 0 (The table is empty.) but source 1 data is being displayed