I have my Sales Manager dashboard (Classic) built.
I cloned this dashboard, and changed component to Stacked Horizontal bar chart.
Still looks fine.

When I look at it in Lightning, component says No data

I can click on View Report (on component) and see the data.

Any suggestions?

I signed into Trailhead through my production org.  Once I was required to install an app, I did not want to install it in production, so I installed in a sandbox.  Now challenge won't mark as complete - presumably because I did it in different org?