Glass panels (VRAY GLASS)

[alejandro_gatjens]

Hi guys! I hope you can help me, I already tried several options but I can't solve it. When rendering these glass panels, that black border is generated on the back, I am not sure if it is already natural when generating the refraction or some value in the glass material is generating this problem for me. I explain a little more, in that model there are 3 layers of geometry, 1 of glass, 1 of texture in opacity and 1 of colored glass, when activating this colored glass it generates this black border. It's a layer sandwich.

Thanks!!

[fixeighted]

Attach some of this geometry to check, as it's easier to investigate.
It could just be that you have not enough refraction bounces...