I was working on a project in blender 2.92, I have put many hours into this and really hope there is a solution.
After working I saved file. When I returned to file I found that when in solid view all was good but when I wanted to check in the Material Shader view (LookDev) is shows just a dark model. This also happens in Renders mode.
I get this issue with a new blend file too.
All setting seem ok. As far as I am aware I didn't change anything.

