Thanks for the very fast response. AmbientLight and any other light doesn’t light it up. I also managed to use three js into Vue directly, without vue-3d-model. Still black.
Unfortunately ArchiCAD has just two options when exporting FBX: with embedded textures, with not embedded textures.
I’ll move on with the Collada format which seems to be exported by ArchiCAD in a “better” way. This gives a perfect result in three js. However I liked to protect the model from unauthorized access using PHP. This brought some problems reading the textures from the images-folder, so I searched for a “one file solution” and came to FBX. Of course, this is no three js matter.
Thanks again! Regards.