I've had this error 3 times now in the past few days. And it's need 3 times in Ranked at that - I keep getting the message about the penalty. If I get penalized, I am going to be very, very disappointed.
@NimbleBard48 Turned out for me the error was caused by my PSU. I plugged the PC plug directly into the wall socket. So no longer via a power strip. This has completely solved the problem. I guess my PSU couldn´t deliver the power.