My Metahuman eye is having a problem

KakaoTalk_20240523_155001316

I did not touch any compositing nodes.

It worked properly at the begging but when I was tweaking other attributes in the scene,
the eye material suddenly got crippled.

I’ve tried re-installing all of the metahuman assets, but as soon as I bring a new meta-human eye,
it changed into crippled texture.

Any solutions? Plz, I’m very desperate.