fix one person has multi cars,add log

liuxiaolong

2020-08-11 71bc4b364e6531703e29dab67100a2b26dc2044f

 controllers/sys.go

@@ -43,9 +43,11 @@
            fmt.Println("unmarshal err:", e1)
            result.Msg = []string{}
         }
         result.Size = sv.Size

      } else {
         result.IsUpgrade = false
         result.Msg = []string{}
      }
   }