Object is black in 3rd and 4th viewport shading I am a newbie to blender so I am sorry in advance if it's something common or just my mistake.

I have this object and the viewport just shows it black. I tried googling this problem but I just couldn't find any working solution. I figured it has to do something with the two black circles that represent the backround?

Thanks in advance!
This can happen when you turn down the scene lighting.
It's a wild guess, but I couldn't reproduce your issue in any other way.