Thanks for reaching out, and I’m looking into this with our engineers.
I can see the pages and navigation are working in your preview link, and it’s certainly strange that they seem to be having an issue on your live site. Would you be able to republish your site in the meantime to see if this solves the error as an immediate fix?
Thanks in advance for your patience, and I’m standing by for your reply.
Republishing should fix any sites affected by it (a small fraction of user sites seem to have reported issues, but our developers were able to find the cause and fix it immediately).
Please let me know if you have other questions – I’m always happy to help!