Material preview ok, Landscape is black

I’m new to UE4. I created a material (see photo) that looks very good in the preview. If I use it on the landscape, it’s black.
**What am I doing wrong. **

I’m asking for help, because I can’t explain the mistake.

Helloooooo… any body there?

Go into the Painting Landscape Mode. You need to add LandscapeLayerInfos to your Landscape.
Once you made them, your Material will be displayed correctly