Synthetic monitoring plugin could not find datasource

I am using docker containers to setup grafana local server, used mimir and loki for my application logs , I am lost here, just created account on grafana cloud and added the default data sources loki and prometheus details but it is giving the error mentioned in screenshot also my synthetic monitoring on cloud is setup and working fine , how can i get it to workHelp! Grafana Synthetic Monitoring Plugin cannot find datasources. Where could be the problem, I am trying to make it work locally .