I have provided og:meta tags for my page which is filled in by PHP based on the GET id in the request.
The issue is, that when I check out what does the Facebook crawler see when it goes through my page, it gets empty data. All the meta tags are empty, there is no title the page is just loaded with the HTML template but no actual content in it. It sure as hell works when accessed by a normal web browser, most browsers actually.
So what could be the cause for this issue, afaik PHP is not something bots can block like they can block JS, right ?