Whilst rendering, are you i the render/shader tab?
is there an image in the preview screen?
did the programme crash whilst rendering?
which renderer are you using? 3delight? one of the others?
is there an arcitectural bit in front of the camera?
Studio will render with the “preview” light, the only times I get the black render is when there’s a wall in the way. (so far)
Some of the non-3delight engines do use up a bit of memory, double check what’s availiable on your system.
Sometimes I have to shut down the sidebar as it’s a bit memory intensive.
I do hope you’ve saved the scene, try rendering with 3delight, then move on to the others?
Studio does let you spot render to check for camera blockage.
the best of luck to ye.