...

services/data/excel/mixed_table.go

@@ -728,6 +728,7 @@ func HandleMixTableDateChange(date, conf string) (newDate string, err error) {
 // @return err error
 // @return errMsg string
 func handleOldSystemDateT(confStr string) (newConf string, err error, errMsg string) {
+	newConf = confStr
 	var config request.SystemDateConf
 	err = json.Unmarshal([]byte(confStr), &config)
 	if err != nil {