The coconut bedding is too wet. Also, as stated above if its hot inside and cool out you'll get some fogging. A lot of the substrate is pretty damp right out of the bag. Can you secure your snake in another container and give the enclosure an hour or two to air out? I have this on fresh setups sometimes. What I do is open the glass, throw a small fan in front or even inside the enclosure (of course the snake is removed before any of this occurs) and let it air out for about an hour.

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