I do something obviously wrong, but I am not able to find what is it ;-)
When I use VUE Raytracing, an image is generated. When I switched the render to Path Tracing, black image is generated always.
As an example, I tried Living_Room dataset:
Raytracing produces this image (materials are not correct, because not correct workspace with all relevant materials was used):
When switched to Path Tracing with the same settings, this is produced:
I am not sure whether it's relevant, but for some reason, even when Interior Best is selected, the message tells "with Exterior Final".
Used configuration (all updates and drivers are at the latest versions):