WordPress themes and plugins can cause duplicate Open Graph Meta Tags
In this case, the WordPress Avada theme and the Yoast SEO plugin are both sending OG:url meta tags, causing this Facebook scraping error. Additionally the Facebook Open Graph Object Debugger may display other errors and can be helpful in debugging them.
I elected to turn off the Avada Open Graph Meta Tags setting, save changes and then enable the Yoast setting.
Notice I also added an Image URL to display an image if the post/page being shared does not contain any images.
If you do not see the Social menu option, enable your Yoast advanced settings. Be sure to ‘Save Changes’ and you are set.
Be sure to see the next post in this series:
Facebook Open Graph Object Debugger and the Share App ID Missing Warning