Why does the light leak like this? There is Only Sunlight on the map. but light is leaking from this corner? moreover there is no error in Modeling. i checked everything everything is normal. i tried with different materials the problem still persists.
Try using light blocking boxes around the problem area, at least 20 cm thick if possible.
I can’t find that
You cant find a box? And stretch it to size?
Even then, the leak is because your geometry is non manifold. That’s all there is to it.