The Dream Sleeper Mini comes with an automatic sliding door mechanism. It is easy to turn it off... And sometimes you accidentally turn it off when your knee hits the button while driving or getting in/out the vehicle.
Below, you will see a photo of the button location to be able to switch the automatic doors off. This will then let you open and close the doors manually. The button is located down by the cigarette lighter socket underneath the stereo in the middle of dashboard the Dream Sleeper Mini campervan.