Roof disappears in Rendering

As you can see in the screenshot I attached, part of my roof and ceiling has disappeared and it is floating to the top right corner in the rendering.

Why is the rendering placing my roof in a different spot and why are parts of it not rendering?

![Capture|690x438]
(upload://2bY54GB91Ilscn1TCOmuzUqBXHG.jpeg)

Set to Monochrome and check to see if there are reversed faces.

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