When i use the object debugger, the scraper is not able to see my OG content on my page. The debugger says "Can't download: Could not retrieve data from URL.", even though it's a 200 OK and shows the correct fetched and canonical URL. I have a subdomain on it, and it work fine.So not sure what happen to my main domain. When click on Scraped URL See exactly what our scraper sees for your URL , it just show blank page.
Your site seems to have some HTML errors: http://validator.w3.org/check?uri=http%3A%2F%2Fspandooly.de
You should fix them before attempting to validate your site.
Funny thing, I create a copy of your page, and it seems to validate with no changes in the HTML. Your webserver might be doing something weird (according to the headers, the charset is missing or none):
来源：https://stackoverflow.com/questions/10786209/facebook-object-debugger-could-not-retrieve-data-from-url-200