My coins are in black color during level, what's happening?

Hello all!

I have a problem with my coins during gameplay in viewport.

Here is the material I use for my coins:

Here is my coin Blueprint:

Here are my LightSource and SkyLight settings:

And here’s is how they look in gameplay:

Because your coin is 100% metallic if needs to have something to reflect otherwise it will be black, Add reflection probe(s) to your scene OR you will have to change your material and fake it with a cube map