Description not showing

I get an error on the debugger that says Object at URL ‘https://olgasheean.com/heads-in-the-sand/’ of type ‘article’ is invalid because it specifies multiple ‘og:url’ values: https://olgasheean.com/heads-in-the-sand/, https://olgasheean.com/heads-in-the-sand/. And the description does not show up. How do I fix that? I am not a developer, so I don’t know how to access the code. Thank you.