There are black spots or bruises inside the potatoes. Is this good or bad?

Is it the surface or the inside? If it is the inside, there must be something wrong. If it is the surface, it may be because the potatoes are exposed to air and sunlight when they are planted. The surface appears green, which is normal. If it is the buds It is dangerous if the surrounding green color is green! Because sprouting beans will produce cyanide. The name cyanide means it must be green. This substance is extremely poisonous!! Haha, the green color of cyanide is a joke, but sprouted potatoes are indeed Contains toxic substances, please do not eat