Canonical_url for posts not working properly?

Hi guys,
I tried adding canonical_url in my frontmatter or even in the code editor directly, but when I have a look at https://dev.to/marcobehler/java-microservices-a-practical-guide-29kn (for example), the rel=canonical tag is missing.

Am I missing something? :)

Thanks!
Marco

Comments

[Marco Behler]

Done @ github.com/thepracticaldev/dev.to/...