error in log

We alot of these in our log:

"[PID:04936:006 2015.05.17 13:42:07.261 ERROR
QueuedHandlerThreadP] Error while processing message ReadStreamEventsBackward
InternalCorrId: 68e35931-e45b-414d-a6e5-dcc575b3be24, CorrelationId:
68e35931-e45b-414d-a6e5-dcc575b3be24, EventStreamId: $streams, FromEventNumber:
-1, MaxCount: 50, ResolveLinkTos: True, RequireMaster: False,
ValidationStreamVersion: in queued handler ‘StorageReaderQueue #1’.

System.Exception: link not in proper format.

at
EventStore.Core.Services.Transport.Http.Convert.ToEntry(ResolvedEvent
eventLinkPair, Uri requestedUrl, EmbedLevel embedContent, Boolean singleEntry)
in
c:\work\EventStore\src\EventStore.Core\Services\Transport\Http\Convert.cs:line
252

at
EventStore.Core.Services.Transport.Http.Convert.ToStreamEventBackwardFeed(ReadStreamEventsBackwardCompleted
msg, Uri requestedUrl, EmbedLevel embedContent, Boolean headOfStream) in
c:\work\EventStore\src\EventStore.Core\Services\Transport\Http\Convert.cs:line
87

at
EventStore.Core.Services.Transport.Http.Format.GetStreamEventsBackward(HttpResponseFormatterArgs
entity, Message message, EmbedLevel embed, Boolean headOfStream) in
c:\work\EventStore\src\EventStore.Core\Services\Transport\Http\Format.cs:line
42

at
EventStore.Core.Services.Transport.Http.SendToHttpEnvelope.ReplyWith[T](T
message) in
c:\work\EventStore\src\EventStore.Core\Services\Transport\Http\SendToHttpEnvelope.cs:line
74

at
EventStore.Core.Bus.MessageHandler`1.TryHandle(Message message) in
c:\work\EventStore\src\EventStore.Core\Bus\MessageHandler.cs:line 33

at
EventStore.Core.Bus.InMemoryBus.Publish(Message message) in
c:\work\EventStore\src\EventStore.Core\Bus\InMemoryBus.cs:line 336

at
EventStore.Core.Bus.QueuedHandlerThreadPool.ReadFromQueue(Object o) in
c:\work\EventStore\src\EventStore.Core\Bus\QueuedHandlerThreadPool.cs:line 106"

Should we take any action?

Are you manually writing links etc? I would be interested in seeing
what was causing the error