Thank you for the answer. What that video shows is similar to what I had already seen in other tutorials. As you can see in the images, I already increased the resolution of the lightmaps, but the error still remains. Keep in mind that in other attempts to make this project, the lighting had worked well for me, but in this case I am starting the project from the beginning, to avoid having unused assets and that everything is more orderly in general. That is why I do not understand what the problem that generates these lighting problems may be.
