chore: fix panic

tariff/awattar.go

@@ -43,6 +43,7 @@ func NewAwattarFromConfig(other map[string]interface{}) (api.Tariff, error) {
 		embed: &cc.embed,
 		log:   util.NewLogger("awattar"),
 		uri:   fmt.Sprintf(awattar.RegionURI, strings.ToLower(cc.Region)),
+		data:  util.NewMonitor[api.Rates](2 * time.Hour),
 	}
 
 	done := make(chan error)

tariff/entsoe.go

@@ -65,6 +65,7 @@ func NewEntsoeFromConfig(other map[string]interface{}) (api.Tariff, error) {
 		embed:  &cc.embed,
 		token:  cc.Securitytoken,
 		domain: domain,
+		data:   util.NewMonitor[api.Rates](2 * time.Hour),
 	}
 
 	// Wrap the client with a decorator that adds the security token to each request.