Drilldown Choropleth Invalid JSON File exception

[Anonymous]

Hi, I'm trying to use Drilldown Choropleth custom visual but i faced a problem.

First of all idea and chart really usefull If we can use it! (there is no detailed documentation and debug/exception management or real sample)

Problem : 

I have 2 TopoJson file for Region and Area levels and this json files works well at the ShapeMap Chart.

But when I try to use same Json files at Drilldown Choropleth or Cartogram it doenst work and shows only "INVALID JSON FILE" exception.

 

I already check the demo/sample json files and there is no difference mine json files.

What is the problem and how can I fix it?

You can find the TopoJson files and sample PBIX file at below to debug and identify the problem.

https://www.dropbox.com/s/z0n24hvgoy952vn/DrilldownChrolepth_Issue.zip?dl=0

[deldersveld]

I only work with public files and have had success hosting the TopoJSON on GitHub in a public repository: https://github.com/deldersveld/topojson

Adding either of these URL formats to the Drilldown Cartogram or Drilldown Choropleth works for me.

https://raw.githubusercontent.com/deldersveld/topojson/master/world-countries-sans-antarctica.json

https://cdn.rawgit.com/deldersveld/topojson/master/world-countries-sans-antarctica.json