Do you see the error with all the reports or only with long running reports?
The SDK timeout setting by default is 10 mins which is stated in the error, if there is no response from the RAS server for 10 mins the connection timeout.
This can be raised to an upper limit however you need to get to the cause whether this happened for only the long running reports of this happens for every call you make from your application.
Thanks,
Prithvi
