Facebook not indexing posts

I am having trouble sharing my blog posts to facebook. Whenever I do, the link preview says 404 error page not found. My facebook comments also says facebook’s server is not crawling the post. I can share to other social networks, and when share the link on facebook it will take clickers to the post; it just says page not found. Anyone else having this difficulty? Here’s the post on which I’m having this trouble: https://sammichespsychmeds.com/shakespeare-porn-stars (Weird title, I know.)