diff --git a/contrib/codecs/http/handler.go b/contrib/codecs/http/handler.go
index f47bdf73e72c8afcca45369ae8bbb8006060e7b2..b5742441bd7b3a76d5da290505390f8c96d489ab 100644
--- a/contrib/codecs/http/handler.go
+++ b/contrib/codecs/http/handler.go
@@ -34,5 +34,6 @@ func (s *Server) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	if err != nil {
 		//	slog.Error("codec err", "err", err)
 	}
+	http.Error(w, "Internal Error", http.StatusInternalServerError)
 	<-c.Closed()
 }