SOLVED: Grafana Dashboard not working properly

When I run the command grafana-server, I get the following error:

Grafana-server Init Failed: Could not find config defaults, make sure homepath command line parameter is set or working directory is homepath

I’m running the relay node in a docker container, and followed coincashew’s tutorial steps.
If i run the commnad service grafana-server start, and navigate to http://localhost:3000 I get the following empty dashboard:

Any hints? Thanks in advance!

SOLUTION: Forgot to select Prometheus as the data source