Hi,
TL;DR:
Check your Materials, especially ones with transparancy, even if they are not in the view.
So I encountered a similar Problem but it only happened in Pathtracing for me.
Anyway I thought I would share it here, just in case it helps you too.
I had this result:
I found out that the reason was a broken or maybe wrongly used Material:
MI_Glass_Clear from the Automotive Material Pack thats in the permanantly free Collection if I remember correctly.
Whatsoever:
I set the Transmission Color to full black, to hide my missing interior.
Just one mesh using this material somewhere in the level, not even in the view, broke my entire render. Setting it to anything else than full black fixes the problem.
