Bake mesh Low poly High poly Double mesh

Hello, I have a problem with "Bake mesh". I'm trying to apply a High Poly version to my Low Poly object. However, when I do everything step by step according to the guides, I have something like a double mesh. I don't know what the problem is and I'm having a really hard time finding anyone else who has had this problem. The model is from blender UV map is made and packed.