W3 Cache plugin and Facebook sharing [closed]

I’d guess this has something to do with your caching layer. The Facebook linter says it’s getting a 206 response to the example link you posted. A 206 means the response contained only partial content, and is often the result of a caching mechanism. It also has some pretty strict validation rules, and your response header may be malformed (for example, it looks to me like it’s missing a content-type header, just at a glance).

Try disabling your caching plugin, and reverting your htaccess to the bare-bones WordPress version (the lines between the “begin WordPress” and “End WordPress” comments at the bottom). See if that helps?

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