Boot issue: Could not start D-Bus. Can you call qdbus-qt5?

i recently installed Leap 42.3. I think this issue is connected to this thread:

it all happened after i installed Anaconda 3.
When i try to boot into Leap there is a little box showing the text “Could not start D-Bus. Can you call qdbus-qt5?”.

When i login using the tty1 and type


the output is

Could not connect to D-Bus server: org.freedesktop.DBus.Error.NotSupported: Unable to autolaunch a dbus-daemon without $DISPLAY for X11

I am using an NVIDIA GTX 970 with the NVIDIA driver. Before i installed Anaconda everything worked just fine…

Thanks for any help!