Substance Painter to UE4 material problem

Stoneshel
Sat, 16 Feb 2019 13:04:48 +0000
Rendering

hi , im new on ue4 and cant figure out why the black areas show up when i rebuilt light . here my issue :

---- ) after i saw these areas , i did move object and areas gone .

---- ) but then, red alert said that map needs rebuild light , so i did it again and areas come back

thanks

also my material setted like that :

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