Business Central v23 SignalR error OnDisconnectedAsync

piktaz

Hello,

I am at my wits end here. I have Windows server 2022 and Business Central v23 CU9 installed. I am getting SignalR error whenever browser client is closed. The below error is for Cronus with extensions that come out of the box. Same happens with another instance with just base application and couple of small customizations. It does not seem that this error affects anything, other than appearing in Windows Events log.
Any ideas what is going on here? Any insights would be greatly appreciated. Thanks!

Category: Prod.Client.WebCoreApp.ClientServiceHub
EventId: 0
ConnectionId: 0HNA8EQ75J3G5
RequestId: 0HNA8EQ75J3G5:00000005
RequestPath: /CRONUS/csh
TransportConnectionId: pBw3sHdla4WwMojcSt9KCg
MemberName: OnDisconnectedAsync
FilePath: s:\repo\src\Platform\Client\Web\Prod.Client.WebCoreApp\Controllers\ClientServiceHub.cs
LineNumber: 201
ExceptionType: System.NotSupportedException

Exception:
System.NotSupportedException: Received unsupported message: Microsoft.AspNetCore.SignalR.Protocol.CloseMessage
at Microsoft.AspNetCore.SignalR.Internal.DefaultHubDispatcher`1.DispatchMessageAsync(HubConnectionContext connection, HubMessage hubMessage)
at Microsoft.AspNetCore.SignalR.HubConnectionHandler`1.DispatchMessagesAsync(HubConnectionContext connection)
at Microsoft.AspNetCore.SignalR.HubConnectionHandler`1.RunHubAsync(HubConnectionContext connection)