fix: empty buckets/objects nodes in new setup (#11493)

cmd/admin-handlers.go

@@ -1585,6 +1585,10 @@ func (a adminAPIHandlers) ServerInfoHandler(w http.ResponseWriter, r *http.Reque
 			buckets = madmin.Buckets{Count: dataUsageInfo.BucketsCount}
 			objects = madmin.Objects{Count: dataUsageInfo.ObjectsTotalCount}
 			usage = madmin.Usage{Size: dataUsageInfo.ObjectsTotalSize}
+		} else {
+			buckets = madmin.Buckets{Error: err.Error()}
+			objects = madmin.Objects{Error: err.Error()}
+			usage = madmin.Usage{Error: err.Error()}
 		}
 
 		// Fetching the backend information

pkg/madmin/info-commands.go

@@ -195,17 +195,20 @@ type Services struct {
 
 // Buckets contains the number of buckets
 type Buckets struct {
-	Count uint64 `json:"count,omitempty"`
+	Count uint64 `json:"count"`
+	Error string `json:"error,omitempty"`
 }
 
 // Objects contains the number of objects
 type Objects struct {
-	Count uint64 `json:"count,omitempty"`
+	Count uint64 `json:"count"`
+	Error string `json:"error,omitempty"`
 }
 
-// Usage contains the tottal size used
+// Usage contains the total size used
 type Usage struct {
-	Size uint64 `json:"size,omitempty"`
+	Size  uint64 `json:"size"`
+	Error string `json:"error,omitempty"`
 }
 
 // KMS contains KMS status information