diff --git a/consensus/consensus.go b/consensus/consensus.go
index c0b99f4b..7098984e 100644
--- a/consensus/consensus.go
+++ b/consensus/consensus.go
@@ -5,6 +5,7 @@ import "time"
 type Log struct {
 	Id      []byte   `bson:"_id"`
 	Records []Record `bson:"records"`
+	Err     error
 }
 
 type Record struct {
diff --git a/consensus/consensusclient/stream.go b/consensus/consensusclient/stream.go
index 9c18d07a..d2f1a055 100644
--- a/consensus/consensusclient/stream.go
+++ b/consensus/consensusclient/stream.go
@@ -9,6 +9,7 @@ type Stream interface {
 	WatchIds(logIds [][]byte) (err error)
 	UnwatchIds(logIds [][]byte) (err error)
 	WaitLogs() []*consensusproto.Log
+	Err() error
 	Close() error
 }
 
@@ -24,6 +25,7 @@ func runStream(rpcStream consensusproto.DRPCConsensus_WatchLogClient) Stream {
 type stream struct {
 	rpcStream consensusproto.DRPCConsensus_WatchLogClient
 	mb        *mb.MB[*consensusproto.Log]
+	err       error
 }
 
 func (s *stream) WatchIds(logIds [][]byte) (err error) {
@@ -42,11 +44,16 @@ func (s *stream) WaitLogs() []*consensusproto.Log {
 	return s.mb.Wait()
 }
 
+func (s *stream) Err() error {
+	return s.err
+}
+
 func (s *stream) readStream() {
 	defer s.Close()
 	for {
 		event, err := s.rpcStream.Recv()
 		if err != nil {
+			s.err = err
 			return
 		}
 		if err = s.mb.Add(&consensusproto.Log{
diff --git a/consensus/consensusproto/consensus.pb.go b/consensus/consensusproto/consensus.pb.go
index a9aa1bb3..be7fc173 100644
--- a/consensus/consensusproto/consensus.pb.go
+++ b/consensus/consensusproto/consensus.pb.go
@@ -363,6 +363,7 @@ func (m *WatchLogRequest) GetUnwatchIds() [][]byte {
 type WatchLogEvent struct {
 	LogId   []byte    `protobuf:"bytes,1,opt,name=logId,proto3" json:"logId,omitempty"`
 	Records []*Record `protobuf:"bytes,2,rep,name=records,proto3" json:"records,omitempty"`
+	Error   *Err      `protobuf:"bytes,3,opt,name=error,proto3" json:"error,omitempty"`
 }
 
 func (m *WatchLogEvent) Reset()         { *m = WatchLogEvent{} }
@@ -412,6 +413,57 @@ func (m *WatchLogEvent) GetRecords() []*Record {
 	return nil
 }
 
+func (m *WatchLogEvent) GetError() *Err {
+	if m != nil {
+		return m.Error
+	}
+	return nil
+}
+
+type Err struct {
+	Error ErrCodes `protobuf:"varint,1,opt,name=error,proto3,enum=anyConsensus.ErrCodes" json:"error,omitempty"`
+}
+
+func (m *Err) Reset()         { *m = Err{} }
+func (m *Err) String() string { return proto.CompactTextString(m) }
+func (*Err) ProtoMessage()    {}
+func (*Err) Descriptor() ([]byte, []int) {
+	return fileDescriptor_6b92aaf7feaf5a54, []int{7}
+}
+func (m *Err) XXX_Unmarshal(b []byte) error {
+	return m.Unmarshal(b)
+}
+func (m *Err) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	if deterministic {
+		return xxx_messageInfo_Err.Marshal(b, m, deterministic)
+	} else {
+		b = b[:cap(b)]
+		n, err := m.MarshalToSizedBuffer(b)
+		if err != nil {
+			return nil, err
+		}
+		return b[:n], nil
+	}
+}
+func (m *Err) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Err.Merge(m, src)
+}
+func (m *Err) XXX_Size() int {
+	return m.Size()
+}
+func (m *Err) XXX_DiscardUnknown() {
+	xxx_messageInfo_Err.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Err proto.InternalMessageInfo
+
+func (m *Err) GetError() ErrCodes {
+	if m != nil {
+		return m.Error
+	}
+	return ErrCodes_Unexpected
+}
+
 func init() {
 	proto.RegisterEnum("anyConsensus.ErrCodes", ErrCodes_name, ErrCodes_value)
 	proto.RegisterType((*Log)(nil), "anyConsensus.Log")
@@ -421,6 +473,7 @@ func init() {
 	proto.RegisterType((*AddRecordRequest)(nil), "anyConsensus.AddRecordRequest")
 	proto.RegisterType((*WatchLogRequest)(nil), "anyConsensus.WatchLogRequest")
 	proto.RegisterType((*WatchLogEvent)(nil), "anyConsensus.WatchLogEvent")
+	proto.RegisterType((*Err)(nil), "anyConsensus.Err")
 }
 
 func init() {
@@ -428,37 +481,39 @@ func init() {
 }
 
 var fileDescriptor_6b92aaf7feaf5a54 = []byte{
-	// 475 bytes of a gzipped FileDescriptorProto
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-	0x3e, 0x6e, 0xc4, 0xd3, 0x45, 0x12, 0x87, 0x99, 0xa9, 0xa3, 0x09, 0xc6, 0x58, 0x08, 0x2e, 0x66,
-	0x8b, 0x85, 0x64, 0x99, 0xf9, 0x43, 0x1b, 0xfe, 0x22, 0xd0, 0x2c, 0xf7, 0xe3, 0x0b, 0xa8, 0xe7,
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-	0x4c, 0x68, 0x5f, 0xd3, 0x56, 0xf2, 0xbb, 0x41, 0xfe, 0x06, 0x1a, 0xc5, 0xf9, 0xf0, 0x7e, 0x95,
-	0xfd, 0x27, 0xa5, 0xde, 0xe9, 0xcd, 0xb4, 0xba, 0xba, 0x47, 0x9e, 0x92, 0x57, 0x8f, 0x7e, 0x6e,
-	0x6c, 0x72, 0xb5, 0xb1, 0xc9, 0x9f, 0x8d, 0x4d, 0xbe, 0x6f, 0xed, 0xda, 0xd5, 0xd6, 0xae, 0xfd,
-	0xde, 0xda, 0xb5, 0x8f, 0xdd, 0x41, 0xf5, 0x97, 0xfb, 0x5c, 0x57, 0xaf, 0x67, 0x7f, 0x03, 0x00,
-	0x00, 0xff, 0xff, 0x40, 0xd0, 0xc6, 0x8e, 0x8b, 0x03, 0x00, 0x00,
+	// 509 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x94, 0x53, 0xcd, 0x8a, 0xd3, 0x50,
+	0x14, 0xee, 0x4d, 0x3a, 0x9d, 0xf6, 0xf4, 0x2f, 0x1e, 0x86, 0x21, 0x74, 0x30, 0x94, 0x88, 0x58,
+	0x65, 0x68, 0xa5, 0x23, 0xb8, 0x72, 0x31, 0x96, 0x0a, 0x95, 0x6a, 0x21, 0x30, 0x0a, 0xae, 0xac,
+	0xb9, 0xb7, 0x31, 0x4c, 0xc8, 0xad, 0xf7, 0xa6, 0x63, 0x67, 0xe3, 0x33, 0xf8, 0x20, 0x3e, 0x88,
+	0x3b, 0x67, 0xe9, 0x52, 0xda, 0x17, 0x91, 0xdc, 0xfc, 0xd0, 0xd8, 0x99, 0x85, 0x9b, 0x96, 0xf3,
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+	0xbb, 0x3e, 0xbc, 0x57, 0x14, 0x1c, 0xa7, 0xc5, 0xac, 0xfd, 0x0e, 0x8c, 0x73, 0x4a, 0x53, 0xfd,
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+	0x07, 0xaa, 0x5f, 0x63, 0x68, 0x42, 0xa5, 0x49, 0xba, 0x7a, 0xaf, 0xe1, 0xe4, 0x31, 0x5a, 0x00,
+	0xab, 0x30, 0x67, 0x35, 0xc5, 0xee, 0x20, 0xf6, 0x37, 0x68, 0x66, 0xed, 0xc6, 0x57, 0x2c, 0xbc,
+	0x4b, 0xe3, 0x7f, 0xde, 0x09, 0x1f, 0xc1, 0x01, 0x13, 0x82, 0x0b, 0xb5, 0xf3, 0xbd, 0x25, 0x8d,
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+	0x42, 0x2b, 0x11, 0x3b, 0xe2, 0xe1, 0x22, 0xf0, 0xdd, 0xc8, 0xd0, 0xd1, 0x80, 0xfa, 0x38, 0x6e,
+	0x3c, 0x5b, 0x2c, 0x24, 0x8b, 0x8c, 0x1f, 0xda, 0xf0, 0x17, 0x81, 0x5a, 0x3e, 0x1f, 0x9f, 0x43,
+	0x25, 0x71, 0x00, 0x9e, 0x14, 0x85, 0x15, 0x7c, 0xd1, 0x31, 0x8a, 0xe4, 0xec, 0x12, 0x5f, 0x40,
+	0x2d, 0x37, 0x01, 0x5a, 0x7b, 0xb5, 0x05, 0x77, 0xdc, 0x52, 0xfe, 0x1a, 0xaa, 0xd9, 0x71, 0xf0,
+	0x7e, 0x91, 0xfd, 0xc7, 0x03, 0x9d, 0x93, 0xdb, 0x69, 0x75, 0xd3, 0x1e, 0x79, 0x4a, 0x5e, 0x3e,
+	0xfe, 0xb9, 0xb1, 0xc8, 0xcd, 0xc6, 0x22, 0x7f, 0x36, 0x16, 0xf9, 0xbe, 0xb5, 0x4a, 0x37, 0x5b,
+	0xab, 0xf4, 0x7b, 0x6b, 0x95, 0x3e, 0xb4, 0x07, 0xc5, 0x0f, 0xfa, 0x53, 0x45, 0xfd, 0x9d, 0xfd,
+	0x0d, 0x00, 0x00, 0xff, 0xff, 0xaa, 0x39, 0x8f, 0xb0, 0xe9, 0x03, 0x00, 0x00,
 }
 
 func (m *Log) Marshal() (dAtA []byte, err error) {
@@ -715,6 +770,18 @@ func (m *WatchLogEvent) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	_ = i
 	var l int
 	_ = l
+	if m.Error != nil {
+		{
+			size, err := m.Error.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintConsensus(dAtA, i, uint64(size))
+		}
+		i--
+		dAtA[i] = 0x1a
+	}
 	if len(m.Records) > 0 {
 		for iNdEx := len(m.Records) - 1; iNdEx >= 0; iNdEx-- {
 			{
@@ -739,6 +806,34 @@ func (m *WatchLogEvent) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	return len(dAtA) - i, nil
 }
 
+func (m *Err) Marshal() (dAtA []byte, err error) {
+	size := m.Size()
+	dAtA = make([]byte, size)
+	n, err := m.MarshalToSizedBuffer(dAtA[:size])
+	if err != nil {
+		return nil, err
+	}
+	return dAtA[:n], nil
+}
+
+func (m *Err) MarshalTo(dAtA []byte) (int, error) {
+	size := m.Size()
+	return m.MarshalToSizedBuffer(dAtA[:size])
+}
+
+func (m *Err) MarshalToSizedBuffer(dAtA []byte) (int, error) {
+	i := len(dAtA)
+	_ = i
+	var l int
+	_ = l
+	if m.Error != 0 {
+		i = encodeVarintConsensus(dAtA, i, uint64(m.Error))
+		i--
+		dAtA[i] = 0x8
+	}
+	return len(dAtA) - i, nil
+}
+
 func encodeVarintConsensus(dAtA []byte, offset int, v uint64) int {
 	offset -= sovConsensus(v)
 	base := offset
@@ -869,6 +964,22 @@ func (m *WatchLogEvent) Size() (n int) {
 			n += 1 + l + sovConsensus(uint64(l))
 		}
 	}
+	if m.Error != nil {
+		l = m.Error.Size()
+		n += 1 + l + sovConsensus(uint64(l))
+	}
+	return n
+}
+
+func (m *Err) Size() (n int) {
+	if m == nil {
+		return 0
+	}
+	var l int
+	_ = l
+	if m.Error != 0 {
+		n += 1 + sovConsensus(uint64(m.Error))
+	}
 	return n
 }
 
@@ -1634,6 +1745,111 @@ func (m *WatchLogEvent) Unmarshal(dAtA []byte) error {
 				return err
 			}
 			iNdEx = postIndex
+		case 3:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Error", wireType)
+			}
+			var msglen int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowConsensus
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				msglen |= int(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if msglen < 0 {
+				return ErrInvalidLengthConsensus
+			}
+			postIndex := iNdEx + msglen
+			if postIndex < 0 {
+				return ErrInvalidLengthConsensus
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			if m.Error == nil {
+				m.Error = &Err{}
+			}
+			if err := m.Error.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
+				return err
+			}
+			iNdEx = postIndex
+		default:
+			iNdEx = preIndex
+			skippy, err := skipConsensus(dAtA[iNdEx:])
+			if err != nil {
+				return err
+			}
+			if (skippy < 0) || (iNdEx+skippy) < 0 {
+				return ErrInvalidLengthConsensus
+			}
+			if (iNdEx + skippy) > l {
+				return io.ErrUnexpectedEOF
+			}
+			iNdEx += skippy
+		}
+	}
+
+	if iNdEx > l {
+		return io.ErrUnexpectedEOF
+	}
+	return nil
+}
+func (m *Err) Unmarshal(dAtA []byte) error {
+	l := len(dAtA)
+	iNdEx := 0
+	for iNdEx < l {
+		preIndex := iNdEx
+		var wire uint64
+		for shift := uint(0); ; shift += 7 {
+			if shift >= 64 {
+				return ErrIntOverflowConsensus
+			}
+			if iNdEx >= l {
+				return io.ErrUnexpectedEOF
+			}
+			b := dAtA[iNdEx]
+			iNdEx++
+			wire |= uint64(b&0x7F) << shift
+			if b < 0x80 {
+				break
+			}
+		}
+		fieldNum := int32(wire >> 3)
+		wireType := int(wire & 0x7)
+		if wireType == 4 {
+			return fmt.Errorf("proto: Err: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: Err: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		case 1:
+			if wireType != 0 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Error", wireType)
+			}
+			m.Error = 0
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowConsensus
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				m.Error |= ErrCodes(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
 		default:
 			iNdEx = preIndex
 			skippy, err := skipConsensus(dAtA[iNdEx:])
diff --git a/consensus/consensusproto/protos/consensus.proto b/consensus/consensusproto/protos/consensus.proto
index e15dac05..17a1bce0 100644
--- a/consensus/consensusproto/protos/consensus.proto
+++ b/consensus/consensusproto/protos/consensus.proto
@@ -52,4 +52,9 @@ message WatchLogRequest {
 message WatchLogEvent {
     bytes logId = 1;
     repeated Record records = 2;
+    Err error = 3;
 }
+
+message Err {
+    ErrCodes error = 1;
+}
\ No newline at end of file
diff --git a/consensus/consensusrpc/consensrpc.go b/consensus/consensusrpc/consensrpc.go
index f1cafe1e..bee34062 100644
--- a/consensus/consensusrpc/consensrpc.go
+++ b/consensus/consensusrpc/consensrpc.go
@@ -6,8 +6,10 @@ import (
 	"github.com/anytypeio/go-anytype-infrastructure-experiments/common/net/rpc/server"
 	"github.com/anytypeio/go-anytype-infrastructure-experiments/consensus"
 	"github.com/anytypeio/go-anytype-infrastructure-experiments/consensus/consensusproto"
+	"github.com/anytypeio/go-anytype-infrastructure-experiments/consensus/consensusproto/consensuserr"
 	"github.com/anytypeio/go-anytype-infrastructure-experiments/consensus/db"
 	"github.com/anytypeio/go-anytype-infrastructure-experiments/consensus/stream"
+	"storj.io/drpc/drpcerr"
 	"time"
 )
 
@@ -57,11 +59,26 @@ func (c *consensusRpc) WatchLog(rpcStream consensusproto.DRPCConsensus_WatchLogS
 			return rpcStream.Close()
 		}
 		for _, rec := range recs {
-			if err := rpcStream.Send(&consensusproto.WatchLogEvent{
-				LogId:   rec.Id,
-				Records: recordsToProto(rec.Records),
-			}); err != nil {
-				return err
+			if rec.Err == nil {
+				if err := rpcStream.Send(&consensusproto.WatchLogEvent{
+					LogId:   rec.Id,
+					Records: recordsToProto(rec.Records),
+				}); err != nil {
+					return err
+				}
+			} else {
+				errCode := consensusproto.ErrCodes(drpcerr.Code(rec.Err))
+				if errCode == 0 {
+					errCode = consensusproto.ErrCodes(drpcerr.Code(consensuserr.ErrUnexpected))
+				}
+				if err := rpcStream.Send(&consensusproto.WatchLogEvent{
+					LogId: rec.Id,
+					Error: &consensusproto.Err{
+						Error: errCode,
+					},
+				}); err != nil {
+					return err
+				}
 			}
 		}
 	}
diff --git a/consensus/stream/service.go b/consensus/stream/service.go
index ff4f597b..807f34d7 100644
--- a/consensus/stream/service.go
+++ b/consensus/stream/service.go
@@ -5,7 +5,7 @@ import (
 	"github.com/anytypeio/go-anytype-infrastructure-experiments/common/app"
 	"github.com/anytypeio/go-anytype-infrastructure-experiments/common/app/logger"
 	"github.com/anytypeio/go-anytype-infrastructure-experiments/common/metric"
-	ocache2 "github.com/anytypeio/go-anytype-infrastructure-experiments/common/pkg/ocache"
+	"github.com/anytypeio/go-anytype-infrastructure-experiments/common/pkg/ocache"
 	"github.com/anytypeio/go-anytype-infrastructure-experiments/consensus"
 	"github.com/anytypeio/go-anytype-infrastructure-experiments/consensus/db"
 	"github.com/cheggaaa/mb/v2"
@@ -42,21 +42,22 @@ type Service interface {
 
 type service struct {
 	db           db.Service
-	cache        ocache2.OCache
+	cache        ocache.OCache
 	lastStreamId uint64
 }
 
 func (s *service) Init(a *app.App) (err error) {
 	s.db = a.MustComponent(db.CName).(db.Service)
 
-	cacheOpts := []ocache2.Option{
-		ocache2.WithTTL(cacheTTL),
-		ocache2.WithLogger(log.Named("cache").Sugar()),
+	cacheOpts := []ocache.Option{
+		ocache.WithTTL(cacheTTL),
+		ocache.WithRefCounter(false),
+		ocache.WithLogger(log.Named("cache").Sugar()),
 	}
 	if ms := a.Component(metric.CName); ms != nil {
-		cacheOpts = append(cacheOpts, ocache2.WithPrometheus(ms.(metric.Metric).Registry(), "consensus", "logcache"))
+		cacheOpts = append(cacheOpts, ocache.WithPrometheus(ms.(metric.Metric).Registry(), "consensus", "logcache"))
 	}
-	s.cache = ocache2.New(s.loadLog, cacheOpts...)
+	s.cache = ocache.New(s.loadLog, cacheOpts...)
 
 	return s.db.SetChangeReceiver(s.receiveChange)
 }
@@ -98,7 +99,7 @@ func (s *service) RemoveStream(ctx context.Context, logId []byte, streamId uint6
 	return
 }
 
-func (s *service) loadLog(ctx context.Context, id string) (value ocache2.Object, err error) {
+func (s *service) loadLog(ctx context.Context, id string) (value ocache.Object, err error) {
 	if ctxLog := ctx.Value(ctxLogKey); ctxLog != nil {
 		return &object{
 			logId:   ctxLog.(consensus.Log).Id,
diff --git a/consensus/stream/service_test.go b/consensus/stream/service_test.go
index 8b3498a9..c804b581 100644
--- a/consensus/stream/service_test.go
+++ b/consensus/stream/service_test.go
@@ -4,6 +4,7 @@ import (
 	"context"
 	"github.com/anytypeio/go-anytype-infrastructure-experiments/common/app"
 	"github.com/anytypeio/go-anytype-infrastructure-experiments/consensus"
+	"github.com/anytypeio/go-anytype-infrastructure-experiments/consensus/consensusproto/consensuserr"
 	"github.com/anytypeio/go-anytype-infrastructure-experiments/consensus/db"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
@@ -14,93 +15,111 @@ import (
 var ctx = context.Background()
 
 func TestService_NewStream(t *testing.T) {
-	fx := newFixture(t)
-	defer fx.Finish(t)
+	t.Run("watch/unwatch", func(t *testing.T) {
+		fx := newFixture(t)
+		defer fx.Finish(t)
 
-	var expLogId = []byte("logId")
-	var preloadLogId = []byte("preloadId")
+		var expLogId = []byte("logId")
+		var preloadLogId = []byte("preloadId")
 
-	fx.mockDB.fetchLog = func(ctx context.Context, logId []byte) (log consensus.Log, err error) {
-		require.Equal(t, expLogId, logId)
-		return consensus.Log{
-			Id: logId,
-			Records: []consensus.Record{
-				{
-					Id: []byte{'1'},
+		fx.mockDB.fetchLog = func(ctx context.Context, logId []byte) (log consensus.Log, err error) {
+			require.Equal(t, expLogId, logId)
+			return consensus.Log{
+				Id: logId,
+				Records: []consensus.Record{
+					{
+						Id: []byte{'1'},
+					},
 				},
-			},
-		}, nil
-	}
-
-	fx.mockDB.receiver(preloadLogId, []consensus.Record{
-		{
-			Id:     []byte{'2'},
-			PrevId: []byte{'1'},
-		},
-		{
-			Id: []byte{'1'},
-		},
-	})
-
-	st1 := fx.NewStream()
-	sr1 := readStream(st1)
-	assert.Equal(t, uint64(1), sr1.id)
-	st1.WatchIds(ctx, [][]byte{expLogId, preloadLogId})
-	st1.UnwatchIds(ctx, [][]byte{preloadLogId})
-	assert.Equal(t, [][]byte{expLogId}, st1.LogIds())
-
-	st2 := fx.NewStream()
-	sr2 := readStream(st2)
-	assert.Equal(t, uint64(2), sr2.id)
-	st2.WatchIds(ctx, [][]byte{expLogId, preloadLogId})
-
-	fx.mockDB.receiver(expLogId, []consensus.Record{
-		{
-			Id: []byte{'1'},
-		},
-	})
-	fx.mockDB.receiver(expLogId, []consensus.Record{
-		{
-			Id:     []byte{'2'},
-			PrevId: []byte{'1'},
-		},
-		{
-			Id: []byte{'1'},
-		},
-	})
-	fx.mockDB.receiver(preloadLogId, []consensus.Record{
-		{
-			Id:     []byte{'3'},
-			PrevId: []byte{'4'},
-		},
-		{
-			Id:     []byte{'2'},
-			PrevId: []byte{'1'},
-		},
-		{
-			Id: []byte{'1'},
-		},
-	})
-	st1.Close()
-	st2.Close()
-
-	for _, sr := range []*streamReader{sr1, sr2} {
-		select {
-		case <-time.After(time.Second / 3):
-			require.False(t, true, "timeout")
-		case <-sr.finished:
+			}, nil
 		}
-	}
 
-	require.Len(t, sr1.logs, 2)
-	assert.Len(t, sr1.logs[string(expLogId)].Records, 2)
-	assert.Equal(t, []byte{'2'}, sr1.logs[string(expLogId)].Records[0].Id)
-	assert.Equal(t, []byte{'2'}, sr1.logs[string(preloadLogId)].Records[0].Id)
+		fx.mockDB.receiver(preloadLogId, []consensus.Record{
+			{
+				Id:     []byte{'2'},
+				PrevId: []byte{'1'},
+			},
+			{
+				Id: []byte{'1'},
+			},
+		})
 
-	require.Len(t, sr2.logs, 2)
-	assert.Len(t, sr2.logs[string(expLogId)].Records, 2)
-	assert.Equal(t, []byte{'2'}, sr2.logs[string(expLogId)].Records[0].Id)
-	assert.Equal(t, []byte{'3'}, sr2.logs[string(preloadLogId)].Records[0].Id)
+		st1 := fx.NewStream()
+		sr1 := readStream(st1)
+		assert.Equal(t, uint64(1), sr1.id)
+		st1.WatchIds(ctx, [][]byte{expLogId, preloadLogId})
+		st1.UnwatchIds(ctx, [][]byte{preloadLogId})
+		assert.Equal(t, [][]byte{expLogId}, st1.LogIds())
+
+		st2 := fx.NewStream()
+		sr2 := readStream(st2)
+		assert.Equal(t, uint64(2), sr2.id)
+		st2.WatchIds(ctx, [][]byte{expLogId, preloadLogId})
+
+		fx.mockDB.receiver(expLogId, []consensus.Record{
+			{
+				Id: []byte{'1'},
+			},
+		})
+		fx.mockDB.receiver(expLogId, []consensus.Record{
+			{
+				Id:     []byte{'2'},
+				PrevId: []byte{'1'},
+			},
+			{
+				Id: []byte{'1'},
+			},
+		})
+		fx.mockDB.receiver(preloadLogId, []consensus.Record{
+			{
+				Id:     []byte{'3'},
+				PrevId: []byte{'4'},
+			},
+			{
+				Id:     []byte{'2'},
+				PrevId: []byte{'1'},
+			},
+			{
+				Id: []byte{'1'},
+			},
+		})
+		st1.Close()
+		st2.Close()
+
+		for _, sr := range []*streamReader{sr1, sr2} {
+			select {
+			case <-time.After(time.Second / 3):
+				require.False(t, true, "timeout")
+			case <-sr.finished:
+			}
+		}
+
+		require.Len(t, sr1.logs, 2)
+		assert.Len(t, sr1.logs[string(expLogId)].Records, 2)
+		assert.Equal(t, []byte{'2'}, sr1.logs[string(expLogId)].Records[0].Id)
+		assert.Equal(t, []byte{'2'}, sr1.logs[string(preloadLogId)].Records[0].Id)
+
+		require.Len(t, sr2.logs, 2)
+		assert.Len(t, sr2.logs[string(expLogId)].Records, 2)
+		assert.Equal(t, []byte{'2'}, sr2.logs[string(expLogId)].Records[0].Id)
+		assert.Equal(t, []byte{'3'}, sr2.logs[string(preloadLogId)].Records[0].Id)
+	})
+	t.Run("error", func(t *testing.T) {
+		fx := newFixture(t)
+		defer fx.Finish(t)
+		fx.mockDB.fetchLog = func(ctx context.Context, logId []byte) (log consensus.Log, err error) {
+			return log, consensuserr.ErrLogNotFound
+		}
+		st1 := fx.NewStream()
+		sr1 := readStream(st1)
+		id := []byte("nonExists")
+		assert.Equal(t, uint64(1), sr1.id)
+		st1.WatchIds(ctx, [][]byte{id})
+		st1.Close()
+		<-sr1.finished
+		require.Len(t, sr1.logs, 1)
+		assert.Equal(t, consensuserr.ErrLogNotFound, sr1.logs[string(id)].Err)
+	})
 }
 
 func newFixture(t *testing.T) *fixture {
diff --git a/consensus/stream/stream.go b/consensus/stream/stream.go
index 0c686290..83684677 100644
--- a/consensus/stream/stream.go
+++ b/consensus/stream/stream.go
@@ -48,7 +48,11 @@ func (s *Stream) WatchIds(ctx context.Context, logIds [][]byte) {
 		if _, ok := s.logIds[logIdKey]; !ok {
 			s.logIds[logIdKey] = struct{}{}
 			if addErr := s.s.AddStream(ctx, logId, s); addErr != nil {
-				log.Warn("can't add stream for log", zap.Binary("logId", logId), zap.Error(addErr))
+				log.Info("can't add stream for log", zap.Binary("logId", logId), zap.Error(addErr))
+				_ = s.mb.Add(consensus.Log{
+					Id:  logId,
+					Err: addErr,
+				})
 			}
 		}
 	}