visualization says "no data" for CPU with sample data files

[bltierney]

statexec seems to be the exact tool I need for analyzing iperf3 CPU load!!

But even with the sample data in explorer/import, the Grafana dashboard always shows 'no data' for the CPU.
(see attached). Im running this on OSX with docker.

Any suggestions on what might be causing this?
I'm just running 'make explore'.