LS50 - Lost Control of Device & Core disconnects

Hello Noris,
At first Best Wishes for 2020.
Secondly, my problems with Roon that stops playing are not over. Yesterday and today the Roon Core (Mac Mini) just stopped responding while I was listening to a Radio station. It happened twice and each time after continuous radio playing for a few hours. It just stopped playing while my Roon remote (iPad) gave the message that the Roon core was not available. I am getting irritated about these returning errors. My Kef LS 50’s stayed turned on and but it was the Core that lost connection. No network failure or anything else. the Core just shut down for no apparent reason. Hope to hear what can be done about it. Rob