First I apologize for my English (Google translator) I had reported this error in the German Linux forum and they referred me to the bug site of Linux. There I logged in and posted the error. In the meantime, I have not been idle and have downloaded the complete package of Opensuse 15.1 beta to an external hard drive and installed it on my laptop. Since then everything is running without recognizable problems. I just wanted to point out the mistake in the intallation that seems to be accessing it on the wrong path. my problem is resolved accordingly. Thanks to all who wanted to help. Beautiful evening.