I tried to create a quarto book because I had accumulated several reports that I had set to be self-contained: true and distributed as a single HTML file.
In this case, the rendering failed due to the file containing the self-contained option.
I wonder if it is possible to make it so that invalid options are automatically ignored when rendering the entire project.
(However, such a behavior may also confuse the user, so it may be more appropriate to raise an error and prompt the user to remove the option before rendering.)