Player feet light up in the dark

I just started using the free asset Goodsky so I don’t know if this is the problem or something else. But when it gets dark everything in my scene is dark, except for some light flickering on my player’s body when he runs. I was wondering if light is bleeding through my terrain so I switched both my terrain and its material to two sided. That helped lessen some of the light flickering on my player’s body, but there is still flickering on his feet.

I turned off the cast shadows for my skylight, but left shadows for my sun (light source) on. I’m using the starter content material M_Rock_Sandstone. And I didn’t do anything to it. I just added it to my terrain. I’m using the third person mannequin.

What is causing all this flickering and how can I stop it?

I’ve been doing a lot of research on lighting. And, I haven’t seen anything relating to my issue. I’m suspecting the issue might be with materials. Perhaps the ground material is reflecting my skylight and since my character’s feet are so close to the ground it is most noticeable there and less so on his body.