Great read Shadid Haque Fauna
I just wanted to point out that domain is not configured correctly on this account. You can remove the custom domain and post directly to fauna.hashnode.dev subdomain
To do that, please check "Publish this article on my publication" option when you're publishing. It's in the sidebar of Editor page.
Also, you can set the canonical URL to original post link fauna.com/blog/authenticating-users-with-a-blockc…
This way, you'll get the traffic as well as SEO boost.
You can also configure a subdomain like blog.fauna.com here.
Check this guide for more info
support.hashnode.com/docs/mapping-domain