openSUSE 15.1 "nvme0"-SSD disconects randomized and system freeze ThinPad L480

Using my lenovo thinkpad L480 with openSUSE 15.1. The system disconnected randomized from “nvme”-SSD and is freezed. Only 10 seconds Power Button brings system hard down. Could it be a kernel problem? Anybody here with some ideas what to do? Thanks for help or ideas

Moved to the English Subforum.