If the door is stuck while open, I would check the "door catcher band" or door stopper. That is the flat piece of metal you see between the hinges. When the spring mechanism inside the door break it will jam the door in open position. As an emergency measure you can saw off the metal band to close the door. To change it you have to take the inside panel off. How to remove the panel is described in some earlier threads here so try a search first.
BTW the door handle is fastened with screws you see close to the door sealing.
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