diff --git a/go.mod b/go.mod
index 4bd7999b7..4d4ed879b 100644
--- a/go.mod
+++ b/go.mod
@@ -38,7 +38,7 @@ require github.com/google/uuid v1.3.1
 require (
 	github.com/IBM/sarama v1.41.3
 	github.com/OpenIMSDK/protocol v0.0.30
-	github.com/OpenIMSDK/tools v0.0.14
+	github.com/OpenIMSDK/tools v0.0.15
 	github.com/aliyun/aliyun-oss-go-sdk v2.2.9+incompatible
 	github.com/go-redis/redis v6.15.9+incompatible
 	github.com/go-sql-driver/mysql v1.7.1
diff --git a/internal/rpc/msg/sync_msg.go b/internal/rpc/msg/sync_msg.go
index aaafb45bb..7c67ff05f 100644
--- a/internal/rpc/msg/sync_msg.go
+++ b/internal/rpc/msg/sync_msg.go
@@ -62,6 +62,11 @@ func (m *msgServer) PullMessageBySeqs(
 			case sdkws.PullOrder_PullOrderDesc:
 				isEnd = seq.Begin <= minSeq
 			}
+			if len(msgs) == 0 {
+				log.ZWarn(ctx, "not have msgs", nil, "conversationID", seq.ConversationID, "seq", seq)
+
+				continue
+			}
 			resp.Msgs[seq.ConversationID] = &sdkws.PullMsgs{Msgs: msgs, IsEnd: isEnd}
 		} else {
 			var seqs []int64
@@ -71,6 +76,7 @@ func (m *msgServer) PullMessageBySeqs(
 			minSeq, maxSeq, notificationMsgs, err := m.MsgDatabase.GetMsgBySeqs(ctx, req.UserID, seq.ConversationID, seqs)
 			if err != nil {
 				log.ZWarn(ctx, "GetMsgBySeqs error", err, "conversationID", seq.ConversationID, "seq", seq)
+
 				continue
 			}
 			var isEnd bool
@@ -80,6 +86,11 @@ func (m *msgServer) PullMessageBySeqs(
 			case sdkws.PullOrder_PullOrderDesc:
 				isEnd = seq.Begin <= minSeq
 			}
+			if len(notificationMsgs) == 0 {
+				log.ZWarn(ctx, "not have notificationMsgs", nil, "conversationID", seq.ConversationID, "seq", seq)
+
+				continue
+			}
 			resp.NotificationMsgs[seq.ConversationID] = &sdkws.PullMsgs{Msgs: notificationMsgs, IsEnd: isEnd}
 		}
 	}
diff --git a/pkg/common/discovery_register/k8s_discovery_register.go b/pkg/common/discovery_register/k8s_discovery_register.go
index 70f9f39f3..811d35b96 100644
--- a/pkg/common/discovery_register/k8s_discovery_register.go
+++ b/pkg/common/discovery_register/k8s_discovery_register.go
@@ -86,3 +86,6 @@ func (cli *K8sDR) GetClientLocalConns() map[string][]*grpc.ClientConn {
 	fmt.Println("should not call this function!!!!!!!!!!!!!!!!!!!!!!!!!")
 	return nil
 }
+func (cli *K8sDR) Close() {
+	return
+}
diff --git a/pkg/common/startrpc/start.go b/pkg/common/startrpc/start.go
index 2aeff3cf0..f04ab2508 100644
--- a/pkg/common/startrpc/start.go
+++ b/pkg/common/startrpc/start.go
@@ -51,17 +51,12 @@ func Start(
 		return err
 	}
 	defer listener.Close()
-	zkClient, err := discovery_register.NewDiscoveryRegister(config.Config.Envs.Discovery)
-	/*
-		zkClient, err := zookeeper.NewClient(config.Config.Zookeeper.ZkAddr, config.Config.Zookeeper.Schema,
-			zookeeper.WithFreq(time.Hour), zookeeper.WithUserNameAndPassword(
-				config.Config.Zookeeper.Username,
-				config.Config.Zookeeper.Password,
-			), zookeeper.WithRoundRobin(), zookeeper.WithTimeout(10), zookeeper.WithLogger(log.NewZkLogger()))*/if err != nil {
+	client, err := discovery_register.NewDiscoveryRegister(config.Config.Envs.Discovery)
+	if err != nil {
 		return utils.Wrap1(err)
 	}
-	// defer zkClient.CloseZK()
-	zkClient.AddOption(mw.GrpcClient(), grpc.WithTransportCredentials(insecure.NewCredentials()))
+	defer client.Close()
+	client.AddOption(mw.GrpcClient(), grpc.WithTransportCredentials(insecure.NewCredentials()))
 	registerIP, err := network.GetRpcRegisterIP(config.Config.Rpc.RegisterIP)
 	if err != nil {
 		return err
@@ -81,11 +76,11 @@ func Start(
 	}
 	srv := grpc.NewServer(options...)
 	defer srv.GracefulStop()
-	err = rpcFn(zkClient, srv)
+	err = rpcFn(client, srv)
 	if err != nil {
 		return utils.Wrap1(err)
 	}
-	err = zkClient.Register(
+	err = client.Register(
 		rpcRegisterName,
 		registerIP,
 		rpcPort,