Mekko Chart stopped working

Hi,

Thanks in advance for the answer.

I have been using Mekko chart (custom visual from Microsoft) from past few weeks. However, It has stopped working suddenly.
Request for any help on how to troubleshoot the issue. I have attached some screenshots for details.

Name and Version:

Chart was working perfectly:

Stopped working and no color selection option in "format visual" pane:

Thanks