When pasting a blog post link into facebook, some blog articles return a 403 error.

Most blog posts work but some do not.

Example:
Does not work, ie facebook receives a 403 error
https://www.zzservers.com/news/emv-rollout-s-impact-to-online-retailers/

Works as expected.
https://www.zzservers.com/news/the-benefits-of-driving-a-1964-volkswagen-van/

Thank you in advance.