update es version require to 7.3+ in comment

console.yml

@@ -1,5 +1,5 @@
 
-# for the system cluster, please use Elasticsearch v7.0+
+# for the system cluster, please use Elasticsearch v7.3+
 elasticsearch:
   - name: default
     enabled: true

env_check.go

@@ -82,7 +82,7 @@ func checkElasticsearchRequire() error{
 		return fmt.Errorf("check elasticsearch requirement error: %v", err)
 	}
 	if cr == -1 {
-		return fmt.Errorf("elasticsearch cluster version of store data required to be version 7.0 and above, but got %s", versionNumber)
+		return fmt.Errorf("elasticsearch cluster version of store data required to be version 7.3 and above, but got %s", versionNumber)
 	}
 	return nil
 }

plugin/api/gateway/instance.go

@@ -232,7 +232,7 @@ func (h *GatewayAPI) getInstanceStatus(w http.ResponseWriter, req *http.Request,
 		err = util.FromJSONBytes(res.Body, &resMap)
 		if err != nil {
 			result[gid.(string)] = util.MapStr{}
-			log.Error(err)
+			log.Errorf("get stats of %v error: %v", endpoint, err)
 			continue
 		}