Data source not found error.

[sankerust]

When opening the dashboard with the exporter this error arises:

Steps to reproduce:

• Have grafana-data-exporter running
• Open dashboard with grafana-data-exporter panel and simpleJson panel in it.

As soon as the dashboard is opened, exporter server crashes with this error:

Chrome console:

Network tab looks like this:

[rozetko]

fixed