Links won't open newest post

My newest campaign/post went out this morning through MailChimp but the post won’t open. (https://ditelbat.com/3-letters-to-coil-from-fictional-persecuted-believers/#more-5886) Clicking the title or the “continue reading” links will not bring in the rest of the post. It says “Nothing found.” I’ve not had this happen before. I had MC check it for me first and this is what he wrote:

“So, it appears that the links being generated for the view in browser link on the site are leading to this 404 Not Found page. I would certainly recommend checking out these links on the WordPress side to see what may be causing these links to break. It looks like the Continue reading links on the site are leading to this lost page, with a link address of https://ditelbat.com/3-letters-to-coil-from-fictional-persecuted-believers/#more-5886”

Thanks for whatever help anyone can provide.
Dee