Error When Submitting Telemetry From Simulator Panel

[farrell-j]

I get the following Grafana panel error when I submit the default telemetry data:
Unexpected token 'E', "Encountere"... is not valid JSON

Is this an issue with the final plugins?
Grafana Instructions
THIS SECTION IS OUTDATED AND NEEDS TO BE UPDATED. THE GENERAL SETUP TO GET GRAFANA PANELS, DASHBOARDS, AND DATASOURCES ADDED AND DISPLAY ARE STILL VALID, BUT THE FINAL PLUGINS WILL LIKELY NOT WORK UNTIL FIXED