diff --git a/app/mix/service/service.go b/app/mix/service/service.go
index 6b476636..849906b6 100644
--- a/app/mix/service/service.go
+++ b/app/mix/service/service.go
@@ -112,7 +112,7 @@ func NewService() *Service {
 func (s *Service) Init(c any) (err error) {
 	cfg, ok := c.(*conf.ConfigSt)
 	if !ok {
-		err = errors.New("cfg struct type not expected")
+		err = errors.New("cfg struct type not expected ")
 		logger.Error("service init, err: %v", err)
 		return
 	}