Prismic closes when I save my work

I still can't find any errors in the logs or recreate this on my side with your repo. So, this still suggests that this is isolated to your machine/browser.

Are you getting any new errors in the console?

Hi @Phil
This is the error in screenshot. The condition is when I want to add a picture on a page of my website. It appears on 4 computers, so the error doesn't depend of the computer.

Many thanks.

OK, so this is error in the console means that the document you're trying to publish is too large. We've done some optimisations in the new page builder so you should allow you to publish. I've activated it on your repo, let me know if this helps.