The "parser mismatched metadata" error from Facebook's Open Graph Debug Tool typically means that the metadata specified in the page's source code does not match the actual content of the page. To fix this error, you need to ensure that the metadata in the source code accurately reflects the content of the page. This can involve correcting any typos or incorrect information in the metadata, or adjusting the metadata to better match the content of the page. If the metadata still does not match the content of the page after you have made these adjustments, you may need to reach out to Facebook for additional support.
The "Parser Mismatched Metadata" error message in the Facebook Open Graph Debug Tool indicates that the metadata provided in the page's HTML does not match the actual content of the page. This can occur for a variety of reasons, including:
If you've checked all of these and the error persists, try re-scraping the URL in the Open Graph Debug Tool to see if the issue has been resolved. If not, it may be a temporary issue with Facebook's servers, so you may want to wait a few hours and try again later.