#Needs documentation

After a few hours of investigation I found that the original function in core book is overriding the Constrain validator from the contributed module. I was able to fix the error by manually deleting core/modules/book.

Not sure how we will solve this issue but, I created a follow up ticket https://www.drupal.org/project/book/issues/3519344 🐛 Cannot save unpublished versions of published content with Layout Builder Active

I have a production D10 website where I successfully moved to the book module. However, I found an Issue with layout builder revisions that does not allows me to save content in draft. I removed the book module and draft estate and revisions are working with Content Moderation. But I do not want to remove the module from production.

This may be related https://www.drupal.org/project/book/issues/2918537 🐛 Cannot save unpublished versions of published content for users without manage book privileges Needs work

Given that Drupal 7 has reached its End Of Life → , this issue should be closed.

Please upgrade to a supported version and feel free to reopen the issue on the new version if applicable.

Thanks for all the hard work you've done in documenting Tokens for D7!
Even now in 2025 I reckon that the Token subsystem could really use some work on the documentation front, especially given the new documentation structure on drupal.org. I'm interested in trying to figure out how to improve it, and might give it some thought before opening up a new issue focusing on D11+.

I've just had to do this, and as far as I can tell, it's simply a case of ensuring the contrib module is present (required with composer). The only thing that changes is the location of the book module.