Kitten won t stop meowing at night in the bathroom?

I recently got a kitten, about three days ago. During the day he roams the apartment, but at night I leave him in the bathroom (with food, water, his toys, bed and his litter box.) I get scared that he ll hurt himself roaming the house alone at night, which is why I ve done this. He won t stop meowing at night, is... show more I recently got a kitten, about three days ago. During the day he roams the apartment, but at night I leave him in the bathroom (with food, water, his toys, bed and his litter box.) I get scared that he ll hurt himself roaming the house alone at night, which is why I ve done this. He won t stop meowing at night, is this the right thing to do? If not please provide details. I am a new kitten owner and am so new to this, and harming him is the last thing I want to do.
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