I placed the target point for the cabin just above the cabin, or you could also try to increase the size of the cabin in order to allow enough space for the character to fit. I took a look at the Target_Slewing point, and it does seem to be actually inside of another asset.
When you teleport to a target point, the center of your character is going to teleport to where the point is located. This means that you will need enough space both up and down for the character to fit in the area that you are attempting to teleport to.