AlertManager plugin failed TypeError: Cannot read property 'toLowerCase' of undefined

[dudubis]

I have configured Alertmanager data source in K8s ConfigMap:

data:
  datasource.yaml: |-
    apiVersion: 1
    datasources:
    - name: AlertManager
      type: camptocamp-prometheus-alertmanager-datasource
      url: http://{{ template "prometheus-operator.fullname" . }}-alertmanager:9093/{{ trimPrefix "/" .Values.prometheus.prometheusSpec.routePrefix }}
      access: proxy     

It does load fine and I see the data source in the Grafana UI.
When I go to the dashboard nothing loads and get the following error:

AlertManager plugin failed TypeError: Cannot read property 'toLowerCase' of undefined

If I configure the data source manually via the Kibana UI and make the dashboard point to it everything loads fine and I'm able to see all stats in the dashboard.

What am I missing the in the ConfigMap to make it work?

[cryptobioz]

This is a known issue that should be fixed in the latest release.
The field jsonData is missing in your template. Please, have a look at the issue #41.

[dudubis]

This is a known issue that should be fixed in the latest release.
The field jsonData is missing in your template. Please, have a look at the issue #41.

Thanks! solved the issue for me. Closing.