Getting 'cannot marshall null objectsuse marshall pointer instead' error when trying to login to RPA

I am trying to login to the business training env and we started getting the error 'cannot marshall null objectsuse marshall pointer instead' .

I checked the Daemon logs show below

<D 2018Sep28 09:33:12.852> throw StreamTimeoutException(timeout while reading from Tcp/Ip stream);

<E 2018Sep28 09:33:12.852> DaemonWorker::throwToClient(MarshallableException (timeout while reading from Tcp/Ip stream));

<D 2018Sep28 09:33:12.852> SocketServer::close(4);.

<D 2018Sep28 09:33:12.852> Using timers

<D 2018Sep28 09:33:12.852> Waiting for connection on port 51115

Searched the KB didnt get any answers, anybody has come across such an issue.

If yes, what was the solution?