diff --git a/modules/gateway/agent.go b/modules/gateway/agent.go
index 9e74ce78f..c1dd4a3a5 100644
--- a/modules/gateway/agent.go
+++ b/modules/gateway/agent.go
@@ -137,7 +137,7 @@ locp:
 							ReqSubType:  msg.SubType,
 							Arg:         msg.Data,
 							Code:        pb.ErrorCode_ReqParameterError,
-							Err:         &pb.ErrorData{Code: pb.ErrorCode_ReqParameterError, Title: "Repeat login!", Datastring: err.Error()},
+							Err:         &pb.ErrorData{Code: pb.ErrorCode_ReqParameterError, Title: "Repeat login!"},
 						})
 						err = this.WriteMsg(&pb.UserMessage{
 							MsgId:    msg.MsgId,