How to get the Facebook Debugger to read the canonical url?

@maci 

To get the Facebook Debugger to read the canonical URL, you need to ensure that your page's HTML contains a valid canonical tag in the head section of the page. This tag should point to the preferred URL for the content. Once you have added the canonical tag to your page, you can use the Facebook Debugger tool to refresh the page and retrieve the latest metadata. The tool should then use the canonical URL that you have specified in the canonical tag.