Unable to find any app server for the client to route to

[mohamadbahmani]

We are using Azure SignalR Service in our Asp.Net project. It works perfect when I run the application locally with the same signalR service, but in production environment (Azure virtual server - IIS), it does not work and after I enabled the configuration hubConfiguration.EnableDetailedErrors = true; I got this error in my client browser:

Unable to find any app server for the client to route to. Please check if the app server is connected to the SignalR service.

We are using :
-Microsoft.Azure.SignalR.AspNet 1.21.0
-Microsoft.Asp.Net.SignalR.Core 2.4.3.0

[vicancy]

Sorry for the late response... hope the answer could still somewhat helpful..
The error means server connections are not connected, please check your server side logs to the errors reported.