Light build problem.

Hi !

Today i met a problem :<
I was building my scene for some time. I decided to build the lights for test if everything is working. This is what i saw

How can i repair that ? I put mushroms for test and it looks like light is effecting dark triangles but those bright seams to not be effected by light.

(sorry for my english if i wrote something Incomprehensible)

Oww i frogot to mention -> its basic material 1 vector color and constant for roughness

And there is no UV error wahtsoever

Any ideas ?

whats wrrong ?

OK …I found a solution and walkaround