Good morning,

I've just started training on AutoCAD Mac 2021 and was learning rather quickly but I'm having issues using subtract command to remove doors from a 3D model. Half of the doors removed using the function the remaining I utilized the erase (by face) function. One door is remaining and both functions won't work for some reason. I have attached the AutoCAD file and the door in question is toward the rear of the home. Any help is greatly appreciated.