diff --git a/utils/typeconv.go b/utils/typeconv.go
index a8e48ad6..3dad529d 100644
--- a/utils/typeconv.go
+++ b/utils/typeconv.go
@@ -325,6 +325,7 @@ func Format4Output(obj interface{}, isSingleLine bool) (retVal string) {
 			}
 		}
 		if err != nil {
+			baseapi.SugarLogger.Infof("Format4Output Marshal:%v failed with error:%v", obj, err)
 			retVal = fmt.Sprintf("%v", obj)
 		}
 	}