Failed to upgrade legacy queries Datasource Prometheus was not found

[soundbooze]

I have set from ProxySQL admin interface:

SET admin-restapi_enabled='true';
SET admin-restapi_port=6070;

LOAD ADMIN VARIABLES TO RUNTIME;
SAVE ADMIN VARIABLES TO DISK;

and append prometheus.yml to add ProxySQL instance:

• job_name: 'proxysql'
  scrape_interval: 5s
  static_configs:
  - targets: ['10.0.0.1:6070']

and then import the JSON:

ProxySQL-Fleet-Overview.json and ProxySQL-Host-Statistics.json

But I received errors saying:

"Failed to upgrade legacy queries Datasource Prometheus was not found"

The dashboard is not showing any data at all.

Please note I am not using docker.