I’m a beginner modeler and make backgrounds for a personal comic in a freestyle render. But for some reason in this particular file, freestyle render is not working properly. Each line appears, however, there is a passage and a door in one of the walls. These lines do not appear at all. Unless I check "Hidden" in the Freestyle settings. But this causes the walls becoming transparent. What's wrong with my file? You can download it from here:
There is an object called "Cube" still in the way. You have set certain objects to Hide in Viewport (by clicking the eye icon in next to an object the Outliner), but not set them to Disable in Renders (by clicking the camera icon next to an object in the Outliner). To show the camera icons click on Filter (the funnel icon in the Outliner) and activate them under Restriction Toggles. Then you can also disable objects in your renders.