add log

liuxiaolong

2020-08-14 e8944f042141152f0cd2aa104a6724fd12475e6a

 controllers/sys.go

@@ -43,6 +43,7 @@
            fmt.Println("unmarshal err:", e1)
            result.Msg = []string{}
         }
         result.Size = sv.Size

      } else {
         result.IsUpgrade = false