good day, I have different .babylon files with their textures etc, and I load them in my web app with no issues, all good
I want to now also load them into the sandbox to play with the inspector, so I drag any of these models into the sandbox and the loading sign appears but then all becomes black. I can then launch the inspector and yes it all appears there, the layers etc, all is there but the central area is alway black and I cannot see anything, any tips?
thank you 
my models come from blender exporter, they maybe have PBR materials, could it be maybe that the sandbox is not illuminating them with a hemispheric light? mmm not sure why all looks black
yes just checked, they have PBRMaterial stuff,
how can I make it in the sandbox that a model with PBRMaterial shows up?
thank you
Can you try to open the inspector in the sandbox, right click on the Nodes nod and add a light?
thank you @Deltakosh, just tried what you suggested, I can add lights, and I try high intensities and all but still all appears black mmm, and yet I can see all the nodes and materials on the left part, everything is correctly loaded into the inspector
by the way I see how to create a light in the inspector but not how to position it
oh yes now it works, increasing a lot the intensity and making light visible, now i can see model