Black triangles around my custom skins eyes

[Qrom Bellascream]

https://i.gyazo.com/23529150f3f69495365ed89f833fc3fe.png

This is what an unit's portrait looks like with a custom skin I made. What is causing the black triangles around the eyes?

 

[Moy]

The alpha channel around the eye part was removed probably or maybe caused by the Illuminati.